Olivia Newton-John 'totally confident' as she battles breast cancer for the second time

Olivia Newton-John is "totally confident" as she battles breast cancer for the second time.

The former "Grease" star and her loved ones opened up to People this week about last month's devastating news that she'd been diagnosed with breast cancer 25 years after her first diagnosis in 1992.

SEE ALSO: Olivia Newton-John postpones tour as she reveals she has breast cancer

"I am really grateful for and touched by the worldwide outpouring of love and concern," Newton-John told People this week. "Thank you. I am feeling good and enjoying total support from my family and friends, along with a team of wellness and medical practitioners both here in the US and at my Olivia Newton-John Cancer Wellness and Research Centre in Melbourne, Australia."

"I'm totally confident that my new journey will have a positive success story to inspire others! Love and light, Olivia," she finished.

See photos of Olivia Newton-John:

29 PHOTOS
Olivia Newton-John out and about
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Olivia Newton-John out and about
ATLANTA, GA - APRIL 09: Olivia Newton-John performs at Cobb Energy Centre on April 9, 2017 in Atlanta, Georgia. (Photo by Chris McKay/Getty Images)
LAS VEGAS, NV - MARCH 23: Executive producer Al Bowman (L) and entertainer Olivia Newton-John, recipient of the Las Vegas Icon award, pose with her trophy during the inaugural Las Vegas F.A.M.E (Film, Art, Music and Entertainment) Awards presented by the Producers Choice Honors at the Hard Rock Cafe Las Vegas Strip on March 23, 2017 in Las Vegas, Nevada. (Photo by Gabe Ginsberg/FilmMagic)
HOLLYWOOD, CA - NOVEMBER 27: Actress / Singer Olivia Newton-John attends the 85th Annual Hollywood Christmas Parade on November 27, 2016 in Hollywood, California. (Photo by Paul Archuleta/FilmMagic)
LONDON, ENGLAND - JANUARY 26: Olivia Newton-John performs at the Union Chapel on January 26, 2017 in London, England. (Photo by Imelda Michalczyk/Redferns)
NASHVILLE, TN - NOVEMBER 02: (L-R) Hayley Orrantia, Olivia Newton-John, and Wendi McLendon-Covey appear onstage during the 50th annual CMA Awards at the Bridgestone Arena on November 2, 2016 in Nashville, Tennessee. (Photo by Taylor Hill/Getty Images)
LAS VEGAS, NV - OCTOBER 23: Entertainer Olivia Newton-John (L) and Singer Steve Real perform at a 'Turn Up the Pink' champagne brunch benefiting Making Strides Las Vegas to raise awareness and support for breast cancer research as part of the Hard Rock Cafe's Hard Rock Heals global charitable initiative at the Hard Rock Cafe Las Vegas Strip on October 23, 2016 in Las Vegas, Nevada. (Photo by Gabe Ginsberg/Getty Images)
NASHVILLE, TN - NOVEMBER 02: John Easterling and singer-songwriter Olivia Newton-John attend the 50th annual CMA Awards at the Bridgestone Arena on November 2, 2016 in Nashville, Tennessee. (Photo by Taylor Hill/Getty Images)
LAS VEGAS, NV - OCTOBER 23: Entertainer Olivia Newton-John attends 'Turn Up the Pink' champagne brunch benefiting Making Strides Las Vegas to raise awareness and support for breast cancer research as part of the Hard Rock Cafe's Hard Rock Heals global charitable initiative at the Hard Rock Cafe Las Vegas Strip on October 23, 2016 in Las Vegas, Nevada. (Photo by Gabe Ginsberg/Getty Images)
THE TONIGHT SHOW STARRING JIMMY FALLON -- Episode 0547 -- Pictured: Singer Olivia Newton-John with The Roots on October 4, 2016 -- (Photo by: Andrew Lipovsky/NBC/NBCU Photo Bank via Getty Images)
TODAY -- Pictured: (l-r) Anchors Hoda Kotb and Kathie Lee Gifford with Olivia Newton-John on Tuesday, October 4, 2016 -- (Photo by: Heidi Gutman/NBC NewsWire via Getty Images/NBCU Photo Bank via Getty Images)
NEW YORK, NY - OCTOBER 04: Singer-songwriter/actress Olivia Newton-John attends the 'Divorce' New York Premiere at SVA Theater on October 4, 2016 in New York City. (Photo by Gilbert Carrasquillo/FilmMagic)
WATCH WHAT HAPPENS LIVE -- Pictured (l-r): Cynthia Nixon and Olivia Newton-John -- (Photo by: Charles Sykes/Bravo/NBCU Photo Bank via Getty Images)
WATCH WHAT HAPPENS LIVE -- Pictured: Olivia Newton-John -- (Photo by: Charles Sykes/Bravo/NBCU Photo Bank via Getty Images)
NEW YORK, NY - OCTOBER 04: Sarah Jessica Parker and Olivia Newton-John attend 'Divorce' New York Premiere on October 4, 2016 in New York City. (Photo by Astrid Stawiarz/Getty Images)
NEW YORK, NY - OCTOBER 03: Singer Olivia Newton-John attends The Build Series Presents Olivia Newton-John, Amy Sky And Beth Nielsen Chapman to discuss The New Project 'LIV ON' at AOL HQ on October 3, 2016 in New York City. (Photo by Desiree Navarro/WireImage)
NEW YORK, NY - OCTOBER 03: Singers Olivia Newton-John and Melissa Etheridge visit the SiriusXM Studio on October 3, 2016 in New York City. (Photo by Cindy Ord/Getty Images)
LOS ANGELES, CA - MAY 21: Olivia Newton-John arrives for the Steve Irwin Gala Dinner at JW Marriott Los Angeles at L.A. LIVE on May 21, 2016 in Los Angeles, California. (Photo by Gabriel Olsen/FilmMagic)
LOS ANGELES, CA - MAY 21: Bindi Irwin (L) and Olivia Newton-John arrive for the Steve Irwin Gala Dinner at JW Marriott Los Angeles at L.A. LIVE on May 21, 2016 in Los Angeles, California. (Photo by Gabriel Olsen/FilmMagic)
ATLANTIC CITY, NJ - APRIL 22: Olivia Newton-John appears in concert in the Arena at Trump Taj Mahal on April 22, 2016 in Atlantic City, New Jersey. (Photo by Donald Kravitz/Getty Images)
LAS VEGAS, NV - JANUARY 23: Olivia Newton-John and Nevada Ballet Theatre's Future Dance students during Nevada Ballet Theater's 32nd Annual Black & White Ball honoring Olivia Newton-John at Wynn Las Vegas on January 23, 2016 in Las Vegas, Nevada. (Photo by Denise Truscello/WireImage)
LOS ANGELES, CALIFORNIA - APRIL 01: Singer Olivia Newton-John and her daughter Chloe Lattanzi on the red carpet for the Premiere of Syfy's 'Dead 7' at Harmony Gold on April 1, 2016 in Los Angeles, California. (Photo by Paul Redmond/WireImage)
LAS VEGAS, NV - JANUARY 23: Chippendsales dancers Ryan Stuart and James Davis pose for a photo with Leeza Gibbons (L) and Olivia Newton-John (2nd from R), at Nevada Ballet Theater's 32nd Annual Black & White Ball at Wynn Las Vegas on January 23, 2016 in Las Vegas, Nevada. (Photo by Denise Truscello/WireImage)
LAS VEGAS, NV - JANUARY 23: Entertainer Olivia Newton-John (R) and her husband, John Easterling, attend Nevada Ballet Theatre's 32nd annual Black & White Ball honoring her at Wynn Las Vegas on January 23, 2016 in Las Vegas, Nevada. (Photo by David Becker/Getty Images)
DANCING WITH THE STARS - 'Episode 2106' - The remaining nine celebrities returned to their original professional dance partners to tackle 'Famous Dances Night' on MONDAY, OCTOBER 19 (8:00-10:01 p.m., ET) on ABC's 'Dancing with the Stars.' Special guest Olivia Newton-John joined the judges' desk to see how the couples re-created iconic dance routines from movies and music videos. One couple was eliminated at the end of the night based on the lowest combined judges' scores and viewer's votes from the 'Switch Up' and 'Most Memorable Year' performances. (Photo by Adam Taylor/ABC via Getty Images) OLIVIA NEWTON-JOHN
LAS VEGAS, NV - AUGUST 09: Singer Chloe Lattanzi (L) and her mother, singer/actress Olivia Newton-John celebrate the 35th anniversary of 'Xanadu' with the world premiere of their music video 'You Have to Believe' at Share Nightclub on August 9, 2015 in Las Vegas, Nevada. (Photo by Bryan Steffy/WireImage)
LAS VEGAS, NV - AUGUST 09: (EXCLUSIVE COVERAGE) (L-R) John Easterling, and his wife, singer/actress Olivia Newton-John, daughter, singer Chloe Lattanzi and her fiance James Driskill attend the celebration of the 35th anniversary of 'Xanadu' with the world premiere of their music video 'You Have to Believe' at Share Nightclub on August 9, 2015 in Las Vegas, Nevada. (Photo by Bryan Steffy/WireImage)
LAS VEGAS, NV - MARCH 07: Entertainer Olivia Newton-John arrives at the 6th annual St. Baldrick's Foundation Head-Shaving Fundraiser at the New York-New York Hotel & Casino on March 7, 2015 in Las Vegas, Nevada. (Photo by Gabe Ginsberg/FilmMagic)
LAS VEGAS, NV - JANUARY 03: Entertainer Olivia Newton-John (L) and actress Didi Conn appear after they performed 'Summer Nights' together at Flamingo Las Vegas on January 3, 2015 in Las Vegas, Nevada. (Photo by David Becker/WireImage)
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The 68-year-old star had initially revealed the news in a short Facebook post at the end of May. She announced she would be postponing her upcoming tour dates to receive radiation therapy and "natural wellness therapies" to combat the cancer, which had metastasized to the sacrum.

Newton-John's husband, John Easterling, echoed his wife's positive outlook about her chances of overcoming cancer once again and revealed that her pain "has gone from [an] 8 to about a 2" after just a week of treatment.

"We both have the same unshakable belief that she's going to have a wonderful success story," he told People. "We're not trying to be positive. We have an absolute knowingness that we can turn this around."

Easterling and Newton-John, who have been married for about eight years, are "taking life at a slower pace" at their home in Southern California, though Newton-John's good friend Leeza Gibbons maintains that she isn't going that slowly.

"She's not naive and doesn't get immobilized," Gibbons said. "She finds light in the darkest corners and just always has."

During her first battle with breast cancer back in 1992, Newton-John underwent a partial mastectomy, chemotherapy and breast reconstruction surgery.

See photos of Olivia Newton-John and John Easterling:

29 PHOTOS
Olivia Newton-John and husband John Easterling together
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Olivia Newton-John and husband John Easterling together
NASHVILLE, TN - NOVEMBER 02: John Easterling (L) and singer Olivia Newton-John (R) attend the 50th annual CMA Awards at the Bridgestone Arena on November 2, 2016 in Nashville, Tennessee. (Photo by John Shearer/WireImage)
MELBOURNE, AUSTRALIA - SEPTEMBER 17: John Easterling and Olivia Newton-John arrive ahead of the Olivia Newton-John Gala at Crown Palladium on September 17, 2016 in Melbourne, Australia. (Photo by Sam Tabone/WireImage)
LOS ANGELES, CA - MAY 21: John Easterling (R) and Olivia Newton-John arrive for the Steve Irwin Gala Dinner at JW Marriott Los Angeles at L.A. LIVE on May 21, 2016 in Los Angeles, California. (Photo by Gabriel Olsen/FilmMagic)
LOS ANGELES, CA - MAY 21: (L-R) John Easterling, Robert Irwin, naturalist Terri Irwin, TV personality Bindi Irwin and singer Olivia Newton-John attend the Steve Irwin Gala Dinner at JW Marriott Los Angeles at L.A. LIVE on May 21, 2016 in Los Angeles, California. (Photo by David Livingston/Getty Images)
LOS ANGELES, CALIFORNIA - APRIL 01: (L-R) John Easterling, singer Chloe Lattanzi, James Driskill and singer Olivia Newton-John attend the premiere of Syfy's 'Dead 7' at Harmony Gold on April 1, 2016 in Los Angeles, California. (Photo by David Livingston/Getty Images)
LAS VEGAS, NV - JANUARY 23: Entertainer Olivia Newton-John (R) and her husband, John Easterling, attend Nevada Ballet Theatre's 32nd annual Black & White Ball honoring her at Wynn Las Vegas on January 23, 2016 in Las Vegas, Nevada. (Photo by David Becker/Getty Images)
LAS VEGAS, NV - AUGUST 09: Husband John Easterling and singer/actress Olivia Newton-John celebrate the 35th anniversary of 'Xanadu' with the world premiere of their music video 'You Have to Believe' at Share Nightclub on August 9, 2015 in Las Vegas, Nevada. (Photo by Steven Lawton/FilmMagic)
LOS ANGELES, CA - OCTOBER 29: John Easterling and Olivia Newton-John attend at Healthy Child Healthy World 'Mom On A Mission GALA' 2014 on October 29, 2014 in Los Angeles, California. (Photo by Michael Bezjian/WireImage)
WEST HOLLYWOOD, CA - OCTOBER 29: Singer Olivia Newton-John (R) and husband John Easterling attend the Mom On A Mission 6th Annual Awards & Gala at the London Hotel on October 29, 2014 in West Hollywood, California. (Photo by David Livingston/Getty Images)
MELBOURNE, AUSTRALIA - SEPTEMBER 28: Olivia Newton-John and husband John Easterling plant a commemorative survivor/remembrance pinwheel supporting the Cancer & Wellness Centre after leading the way on this charitable walk at The Centre Ivanhoe on September 28, 2014 in Melbourne, Australia. The walk aims to raise funds for the wellness and supportive care programs provided to patients. (Photo by Robert Prezioso/Getty Images)
MELBOURNE, AUSTRALIA - SEPTEMBER 28: Olivia Newton-John and husband John Easterling supports the Cancer & Wellness Centre by leading the way on this charitable walk at The Centre Ivanhoe on September 28, 2014 in Melbourne, Australia. The walk aims to raise funds for the wellness and supportive care programs provided to patients. (Photo by Robert Prezioso/Getty Images)
LAS VEGAS, NV - APRIL 11: John Easterling, Olivia Newton-John, Pat Farrar and John Farrar attend the after party of Olivia Newton-John's new show 'Summer Nights' at Flamingo Las Vegas on April 11, 2014 in Las Vegas, Nevada. (Photo by Denise Truscello/WireImage)
LAS VEGAS, NEVADA - DECEMBER 10: Singer/actress Olivia Newton-John and John Easterling arrive at the American Country Awards 2013 at the Mandalay Bay Events Center on December 10, 2013 in Las Vegas, Nevada. (Photo by Axelle/Bauer-Griffin/FilmMagic)
MELBOURNE, AUSTRALIA - SEPTEMBER 20: Olivia Newton-John and her husband John Easterling kiss as they arrive at the inaugural ONJ Gala to raise funds for the Olivia Newton-John Cancer & Wellness Centre at the Regent Plaza Ballroom on September 20, 2013 in Melbourne, Australia. (Photo by Scott Barbour/Getty Images)
LOS ANGELES, CA - JANUARY 12: Actress Olivia Newton-John and John Easterling arrive for the G'Day USA Black Tie Gala held at at the JW Marriot at LA Live on January 12, 2013 in Los Angeles, California. (Photo by Mark Sullivan/Getty Images)
MELBOURNE, AUSTRALIA - SEPTEMBER 15: Australian actress, Olivia Newton-John and her husband, John Easterling prepare to lead the inaugural Wellness Walk on September 15, 2013 in Melbourne, Australia. The event will raise funds for the Olivia Newton-John Cancer and Wellness Centre. (Photo by Scott Barbour/Getty Images)
INDIANAPOLIS, IN - MAY 26: Olivia Newton-John (R) and her husband John Easterling attends the IPL 500 Festival Parade at on May 26, 2012 in Indianapolis, Indiana. (Photo by Joey Foley/Getty Images)
ROME, ITALY - OCTOBER 28: John Easterling and Olivia Newton-John attend 'A Few Best Men' Premiere during the 6th International Rome Film Festival at Auditorium Parco Della Musica on October 28, 2011 in Rome, Italy. (Photo by Venturelli/WireImage)
LOS ANGELES, CA - OCTOBER 24: John Easterling and Olivia Newton-John attend the Australians in Film screening of 'A Few Best Men' held at the Academy of Motion Picture Arts and Sciences Pickford Centre on October 24, 2011 in Los Angeles, California. (Photo by Toby Canham/Getty Images)
NEW YORK, NY - APRIL 27: Olivia Newton-John and husband John Easterling pose as she promotes 'Livwise' at Barnes & Noble 18th Street on April 27, 2012 in New York City. (Photo by Bruce Glikas/FilmMagic)
BURBANK, CA - OCTOBER 06: Actress Olivia Newton-John and husband John Easterling attend the '1 A Minute' LIVE Supporting Susan G. Komen for the Cure' premiere at Woodbury University on October 6, 2010 in Burbank, California. (Photo by Angela Weiss/Getty Images)
WASHINGTON - OCTOBER 16: John Easterling and Olivia Newton-John attend Honoring The Promise celebrates the 30th anniversary of the Promise at The John F. Kennedy Center for Performing Arts on October 16, 2010 in Washington, DC. (Photo by Paul Morigi/WireImage)
HOLLYWOOD, CA - JANUARY 22: John Easterling, Actors, Olivia Newton-John, John Travolta and Kelly Preston arrive at the G'Day USA Australia Week 2011 Black Tie Gala at Hollywood Palladium on January 22, 2011 in Hollywood, California. (Photo by Jeffrey Mayer/WireImage)
TORONTO, ON - SEPTEMBER 09: John Easterling and singer/actress Olivia Newton-John attend the Opening Night Party during the 35th Toronto International Film Festival at Spice Route on September 9, 2010 in Toronto, Canada. (Photo by George Pimentel/Getty Images)
MELBOURNE, AUSTRALIA - MAY 21: Olivia Newton-John and husband John Easterling arrive at the 2010 Precious Metal Ball in support of the Olivia Newton-John Cancer and Wellness Centre at Peninsula, the Docklands on May 21, 2010 in Melbourne, Australia. (Photo by Scott Barbour/Getty Images)
HOLLYWOOD, CA - JANUARY 16: Amazon John Easterling and Olivia Newton-John arrive at G'Day USA 2010 Los Angeles Black Tie Gala held at Hollywood & Highland on January 16, 2010 in Hollywood, California. (Photo by Gregg DeGuire/FilmMagic)
DUESSELDORF, GERMANY - OCTOBER 06: Olivia Newton-John and husband John Easterling arrive at the Airport on October 6, 2009 in Duesseldorf, Germany. Newton-John arrives in Germany to participate in a breast cancer prevention month. (Photo by Friedemann Vogel/Getty Images)
NEW YORK - APRIL 02: Olivia Newton-John (R) and husband John Easterling (L) visit FOX's 'The Morning Show with Mike and Juliet' at FOX studios on April 2, 2009 in New York City. (Photo by Bruce Glikas/FilmMagic)
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