Matt Damon gushes about fatherhood: 'My whole life opened up when I became a dad'

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Matt Damon on Fatherhood: 'My Whole Life Opened Up When I Became a Dad'

Matt Damon is known for being a doting dad -- he even recently had a family day at Disneyland for his daughter Gia's seventh birthday -- and the father of four is opening up to ET about how much his kids have changed him.

ET caught up with the 44-year-old actor at the grand opening of trainer Jason Walsh's Rise Nation Fitness Studio in West Hollywood, where he revealed that being a dad makes him "feel really lucky."

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"I think everything changes in little wonderful ways," he told ET. "My whole life opened up when I became a dad."

"I'm very much on the receiving end of all the good stuff," he added.

Damon has an excellent partner in parenting in his wife of almost a decade, Luciana Barroso, and after all these years together, The Martian star is still gushing over her.

It was love at first sight for the pair -- even if Damon still isn't sure he believes in that sort of thing. "She definitely struck me. It was like the room lit up or something," he said of the moment he met his wife. "I don't go in for that kind of thing, but what can I say? It happened to me."

Photos of Matt Damon from throughout his career:

45 PHOTOS
Matt Damon
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Matt Damon gushes about fatherhood: 'My whole life opened up when I became a dad'
HOLLYWOOD, CA - NOVEMBER 07: Actor Matt Damon attends the 'Project Greenlight' event at Boulevard3 on November 7, 2014 in Hollywood, California. (Photo by Jason LaVeris/FilmMagic)
Actors Ben Affleck, 25, left, and Matt Damon, 27, pose during an interview in New York Nov. 22, 1997. The two friends from high school days in Cambridge, Mass. wrote and star in the movie, "Good Will Hunting." (AP Photo/Yukio Gion)
Matt Damon, right, and Ben Affleck hold their Best Screenplay for a Motion Picture award at the 55th Annual Golden Globe Awards in Beverly Hills, Calif., Sunday, Jan. 18, 1998. Damon and Affleck won for the film "Good Will Hunting." (AP Photo/Mark J. Terrill)
Cast members of the new Gus Van Sant film, "Good Will Hunting" Ben Affleck, left, Minnie Driver and Matt Damon arrive at the premiere of the movie Tuesday, Dec. 2, 1997, in Los Angeles. The movie also stars Robin Williams. (AP Photo/John Hayes)
Matt Damon, second from left, in "Good Will Hunting."
Matt Damon with Gretchen Mol in "Rounders."
Matt Damon with Minnie Driver in "Good Will Hunting."
Matt Damon in "The Talented Mr. Ripley."
Matt Damon in "The Informant."
Matt Damon in "The Informant."
Actors Matt Damon, left, and Brad Pitt talk arrive for a photocall to promote their latest movie "Ocean's Twelve" in Rome's Capitol Hill, Friday, Dec. 10, 2004. (AP Photo/Gregorio Borgia)
Morgan Freeman with Matt Damon in "Invictus."
A rare moment in which Baldwin isn't breaking the tension. (AP Photo/HO/Courtesy of Warner Bros. Pictures/Andrew Cooper)
Australian actor Heath Ledger, left, and US actor Matt Damon pose for photographers after a press conference to present their latest movie "The Brothers Grimm" by US director Terry Gilliam at the 62nd edition of the Venice Film Festival in Venice's Lido, northern Italy, Sunday, Sept. 4, 2005. (AP Photo/Domenico Stinellis)
Actor Matt Damon and his nephew, Jack Damon, watch the game between the Pittsburgh Pirates and the Boston Red Sox at Fenway Park in Boston, Sunday, June 19, 2005. (AP Photo/Michael Dwyer)
Hollywood star Matt Damon laughs at a news conference to promote one of his latest movies "The Bourne Supremacy" at a Tokyo hotel Wednesday, Jan. 12, 2005. The new film, a sequel to Damon's hit movie "The Bourne Identity," about amnesiac assassin Jason Bourne, will be released Feb. 11 in Japan. (AP Photo/Katsumi Kasahara)
Ben Affleck, right, and Matt Damon pose for photos on the red carpet prior to the world premiere of "Feast" at the Palms Casino & Hotel in Las Vegas on Tuesday, Sept. 12, 2006. Affleck and Damon are executive producers of the film which was made possible by the duo's television show "Project Greenlight". (AP Photo/Isaac Brekken)
Die US-Schauspieler Matt Damon am Samstag, 10. Feb. 2007, in Berlin waehrend einer Pressekonferenz zu seinem Film "Der Gute Hirte" bei den 57. Berliner Filmfestspielen "Berlinale". (AP Photo/Markus Schreiber) --- US actor Matt Damon attends a news conference for his movie "The Good Shepherd" at the 57th Film Festival "Berlinale" in Berlin, Germany, Saturday, Feb. 10, 2007. (AP Photo/Markus Schreiber)
American actress Ellen Barkin, left, and American actor Matt Damon talk during a photo call for the film "Ocean's Thirteen," at the 60th International film festival in Cannes, southern France, on Thursday, May 24, 2007. (AP Photo/Jeff Christensen)
From right, American actors, George Clooney, Brad Pitt and Matt Damon arrive for the screening of the film "Ocean's Thirteen," at the 60th International film festival in Cannes, southern France, on Thursday, May 24, 2007. (AP Photo/Francois Mori)
Actor Matt Damon at the Ocean's Thirteen Premiere in Los Angeles, Calif. on Tuesday, June 5, 2007. (AP Photo/Dan Steinberg)
Actor Matt Damon is seen before being honored with a star on the Hollywood Walk of Fame in Los Angeles, Wednesday, July 25, 2007. (AP Photo/Damian Dovarganes)
Actor Matt Damon is honored with a star on the Hollywood Walk of Fame in Los Angeles, Wednesday, July 25, 2007. At left is Honorary Mayor of Hollywood Johnny Grant. (AP Photo/Damian Dovarganes)
Actor Matt Damon arrives at the premiere of "The Bourne Ultimatum" in Los Angeles, Wednesday, July 25, 2007. (AP Photo/Mark J. Terrill)
U.S. actor Matt Damon and his wife Luciana arrive for the screening of his movie " The Bourne Ultimatum" at the 33rd American Film Festival in Deauville, Normandy, France, Saturday Sept. 1, 2007. (AP Photo/Michel Spingler)
U.S. actor Matt Damon waves as he arrives for the Australian premier of his movie, "The Bourne Ultimatum", at a Sydney theater Tuesday, Aug. 7, 2007. (AP Photo/Rick Rycroft)
Matt Damon attends a presentation of "Running The Sahara" during the Toronto International Film Festival in Toronto, Saturday, Sept. 8, 2007. (AP Photo/Carolyn Kaster)
HOLLYWOOD, CA - NOVEMBER 07: Actors Matt Damon and Ben Affleck attend the 'Project Greenlight' event at Boulevard3 on November 7, 2014 in Hollywood, California. (Photo by Jason LaVeris/FilmMagic)
LOS ANGELES, CA - OCTOBER 08: Matt Damon and Luciana Barroso with his mother Nancy Carlsson-Paige are seen on October 08, 2014 in Los Angeles, California. (Photo by Bauer-Griffin/GC Images)
LOS ANGELES, CA - SEPTEMBER 29: Matt Damon seen at LAX on September 29, 2014 in Los Angeles, California. (Photo by GVK/Bauer-Griffin/GC Images)
VENICE, ITALY - SEPTEMBER 29: (L-R) Matt Damon and Luciana Barroso sighting at Marco Polo Airport on September 29, 2014 in Venice, Italy. (Photo by Ernesto Ruscio/GC Images)
US actor Matt Damon boards a taxi boat at the Cipriani hotel on September 27, 2014 in Venice where US actor George Clooney and British fiancee, Amal Alamuddin celebrate their wedding. George Clooney has said goodbye to bachelorhood in Venice with a stag party at his favourite restaurant with Hollywood chums, and was gearing up for a day of glamourous pre-wedding celebrations. The actor had swept into the floating city yesterday with his British fiancee Amal Alamuddin on a watertaxi dubbed 'Amore', zipping up the Grand Canal to cheers from fans at the start of nuptials set to draw out over the weekend. AFP PHOTO / ANDREAS SOLARO (Photo credit should read ANDREAS SOLARO/AFP/Getty Images)
NEW YORK, NY - SEPTEMBER 23: Actor and co-founder of Water.org Matt Damon speaks at the Clinton Global Initiative (CGI), on September 23, 2014 in New York City. The annual meeting, established in 2005 by President Clinton, convenes global leaders to discuss solutions to world problems. (Photo by John Moore/Getty Images)
LOS ANGELES, CA - JUNE 27: Matt Damon is seen in Los Angeles on June 27, 2014 in Los Angeles, California. (Photo by Pixplus/Bauer-Griffin/GC Images)
BOSTON, MA - JUNE 10: Matt Damon is seen at Boston Logan airport on June 10, 2014 in Boston, Massachusetts. (Photo by Stickman/Bauer-Griffin/GC Images)
BOSTON, MA - JUNE 10: Actor Matt Damon attends the Mass General Hospital Cancer Center's 7th annual 'the one hundred' Event at the Westin Boston Waterfront Hotel on June 10, 2014 in Boston, Massachusetts. (Photo by Paul Marotta/Getty Images)
LOS ANGELES, CA - MAY 15: Matt Damon attends an NBA playoff game between the Oklahoma City Thunder and the Los Angeles Clippers at Staples Center on May 15, 2014 in Los Angeles, California. (Photo by Noel Vasquez/GC Images)
LOS ANGELES, CA - MARCH 06: Matt Damon is seen leaving Katsuya restaurant on March 06, 2014 in Los Angeles, California. (Photo by Bauer-Griffin/GC Images)
PARIS, FRANCE - FEBRUARY 12: Actor Matt Damon and his wife Lucinda Damon attend the 'Monuments Men' : Premiere at Cinema UGC Normandie on February 12, 2014 in Paris, France. (Photo by Bertrand Rindoff Petroff/Getty Images)
PARIS, FRANCE - FEBRUARY 12: Matt Damon attends 'Monuments Men' Paris premiere at Cinema UGC Normandie on February 12, 2014 in Paris, France. (Photo by Julien M. Hekimian/Getty Images)
MILAN, ITALY - FEBRUARY 09: L-R Fabio Fazio, George Clooney and Matt Damon attend 'Che Tempo Che Fa' TV Show on February 9, 2014 in Milan, Italy. (Photo by Stefania D'Alessandro/Getty Images)
MILAN, ITALY - FEBRUARY 09: Matt Damon attends 'Che Tempo Che Fa' TV Show on February 9, 2014 in Milan, Italy. (Photo by Stefania D'Alessandro/Getty Images)
BERLIN, GERMANY - FEBRUARY 08: Actor Matt Damon and Luciana Barroso attend 'The Monuments Men' premiere during 64th Berlinale International Film Festival at Berlinale Palast on February 8, 2014 in Berlin, Germany. (Photo by Anita Bugge/WireImage)
BERLIN, GERMANY - FEBRUARY 08: Matt Damon attends 'The Monuments Men' press conference during 64th Berlinale International Film Festival at Grand Hyatt Hotel on February 8, 2014 in Berlin, Germany. (Photo by Luca Teuchmann/Getty Images)
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Their first romantic moment was equally as sweet. The Boston native told ET that though it wasn't their first official date, a night together while he was working in Prague was very special. "We went on a walk in Prague," he shared. "That wouldn't have been our first date, but that was the first thing we both agreed was actually more romantic than we expected -- a long walk on a warm night."

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So how will they be celebrating their 10th anniversary this December? Damon will be on the set of the next Bourne movie, which Walsh is helping him to train for.

"Hopefully they'll give me the night off so we can go get dinner," he said. "December 9 is not a great anniversary persay, because it's normally a time when everyone is working, so we usually try to figure out something fun and special to do. If I can get a couple days off I'll figure something out."

Fingers crossed!

Related - Photos of Matt Damon and his pal Ben Affleck from over the years:
27 PHOTOS
Ben Affleck and Matt Damon through the years
See Gallery
Matt Damon gushes about fatherhood: 'My whole life opened up when I became a dad'
Actors Ben Affleck, 25, left, and Matt Damon, 27, pose during an interview in New York Nov. 22, 1997. The two friends from high school days in Cambridge, Mass. wrote and star in the movie, "Good Will Hunting." (AP Photo/Yukio Gion)
Matt Damon, right, and Ben Affleck hold their Best Screenplay for a Motion Picture award at the 55th Annual Golden Globe Awards in Beverly Hills, Calif., Sunday, Jan. 18, 1998. Damon and Affleck won for the film "Good Will Hunting." (AP Photo/Mark J. Terrill)
Cast members of the new Gus Van Sant film, "Good Will Hunting" Ben Affleck, left, Minnie Driver and Matt Damon arrive at the premiere of the movie Tuesday, Dec. 2, 1997, in Los Angeles. The movie also stars Robin Williams. (AP Photo/John Hayes)
Ben Affleck and Matt Damon, right, react to winning the Oscar for Best Original Screenplay for "Good Will Hunting" at the 70th Academy Awards in Los Angeles Monday, March 23, 1998. (AP Photo/Susan Sterner)
Actors Matt Damon, left, and Ben Affleck arrive for the 71st Annual Academy Awards at the Dorothy Chandler Pavilion of the Los Angeles Music Center Sunday, March 21, 1999. (AP Photo/Dave Caulkin)
LOS ANGELES, CA - MARCH 23: Oscar winners Matt Damon (L) and Ben Affleck hold the awards they won for best original screenplay for the film 'Good Will Hunting' which the two wrote during the 70th Annual Academy Awards 23 March in Los Angeles. (Photo credit should read HAL GARB/AFP/Getty Images)
Ben Affleck, right, tells a crowd at a Harvard Workers First! rally Saturday, May 6, 2000, in Cambridge, Mass., that his father was underpaid and underappreciated as a Harvard University custodial supervisor. Affleck and Matt Damon, left, were at the rally, organized by the Harvard Living Wage Campaign, to lend their support for increasing service workers' hourly wage to $10.25. (AP Photo/SEVANS)
Actors Ben Affleck, left, and Matt Damon, two of the creators of the documentary series "Project Greenlight," arrive together to announce the winners of the third edition of the series in the Hollywood section of Los Angeles, Tuesday, July 13, 2004. A first-time director and first-time screenwriter were to be chosen from over 6,000 entries and awarded a budget of at least $1 million from Miramax Films to make a full-length feature. Bravo will air the filmmaking process in a documentary series beginningFebruary 2005. (AP Photo/Chris Pizzello)
Ben Affleck, left, and Matt Damon pose for photos on the red carpet prior to the world premiere of "Feast" at the Palms Casino & Hotel in Las Vegas on Tuesday, Sept. 12, 2006. Affleck and Damon are executive producers of the film which was made possible by the duo's television show "Project Greenlight". (AP Photo/Isaac Brekken)
Actor and honoree Matt Damon, left, and actor Ben Affleck on stage at The 24th American Cinematheque Awards in Beverly Hills, Calif. on Saturday, March 27, 2010. (AP Photo/Dan Steinberg)
Actor Ben Affleck, right, and actor and honoree Matt Damon embrace at The 24th American Cinematheque Awards in Beverly Hills, Calif. on Saturday, March 27, 2010. (AP Photo/Dan Steinberg)
Ben Affleck, left, and Matt Damon attend the Modern Master Award Ceremony at the Santa Barbara International Film Festival on Friday, Jan.25, 2013, in Santa Barbara, Calif. (Photo by Richard Shotwell/Invision/AP)
Matt Damon and Ben Affleck are seen at the HBO Project Greenlight Filmmaker Showcase on Friday, Nov. 7, 2014 in Hollywood, Calif. (Photo by John Shearer/Invision for HBO/AP Images)
Matt Damon, left, and Ben Affleck arrives at Project Greenlight Season Four Winner Revealed on Friday, Nov 07, 2014, in Los Angeles. (Photo by Richard Shotwell/Invision/AP)
IMAGE DISTRIBUTED FOR HBO - Matt Damon, left, and Ben Affleck are seen at the HBO Project Greenlight Filmmaker Showcase on Friday, Nov. 7, 2014 in Hollywood, Calif. (Photo by John Shearer/Invision for HBO/AP Images)
LOS ANGELES - JULY 25: Actors Ben Affleck and Matt Damon talk at the afterparty for the premiere of Universal Picture's 'The Bourne Ultimatum' at the Hollywood Palladium on July 25, 2007 in Los Angeles, California. (Photo by Kevin Winter/Getty Images)
LOS ANGELES, CA - NOVEMBER 07: Actors Matt Damon (L) and Ben Affleck attend HBO Reveals Winner of 'Project Greenlight' Season 4 at BOULEVARD3 on November 7, 2014 in Los Angeles, California. (Photo by Frederick M. Brown/Getty Images)
BEVERLY HILLS, CA - MARCH 27: Honoree actor Matt Damon and actor Ben Affleck speak onstage during American Cinematheque 24th Annual Award Presentation To Matt Damon at The Beverly Hilton hotel on March 27, 2010 in Beverly Hills, California. (Photo by Kevork Djansezian/Getty Images)
JIMMY KIMMEL LIVE: AFTER THE OSCARS - The 11th annual 'Jimmy Kimmel Live: After The Oscars' special airs live on Oscar Sunday, February 28, after the late local news EST/CST and at 10pm PST on ABC. (Photo by Randy Holmes/ABC via Getty Images) MATT DAMON, BEN AFFLECK
JIMMY KIMMEL LIVE: AFTER THE OSCARS - The 11th annual 'Jimmy Kimmel Live: After The Oscars' special airs live on Oscar Sunday, February 28, after the late local news EST/CST and at 10pm PST on ABC. (Photo by Randy Holmes/ABC via Getty Images) MATT DAMON, BEN AFFLECK
CULVER CITY, CA - JUNE 04: Honorees Matt Damon (L) and Ben Affleck accept the Guys Of The Decade award onstage during Spike TV's 10th Annual Guys Choice Awards at Sony Pictures Studios on June 4, 2016 in Culver City, California. (Photo by Kevin Winter/Getty Images)
CULVER CITY, CA - JUNE 04: (L-R) Actors Robert De Niro, Matt Damon and Ben Affleck attend Spike TV's 10th Annual Guys Choice Awards at Sony Pictures Studios on June 4, 2016 in Culver City, California. (Photo by Mark Davis/Getty Images for Spike TV)
CULVER CITY, CA - JUNE 04: Honorees Ben Affleck (L) and Matt Damon accept the Guys of the Decade Award onstage during Spike TV's 10th Annual Guys Choice Awards at Sony Pictures Studios on June 4, 2016 in Culver City, California. (Photo by Mark Davis/Getty Images for Spike TV)
CULVER CITY, CA - JUNE 04: Actors Ben Affleck (L) and Matt Damon attend Spike TV's 10th Annual Guys Choice Awards at Sony Pictures Studios on June 4, 2016 in Culver City, California. (Photo by Frazer Harrison/Getty Images for Spike TV)
CULVER CITY, CA - JUNE 04: Actors Matt Damon (L) and Ben Affleck attend Spike TV's 10th Annual Guys Choice Awards at Sony Pictures Studios on June 4, 2016 in Culver City, California. (Photo by Frazer Harrison/Getty Images for Spike TV)
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