Jimmy Fallon candidly addresses drinking allegations, Donald Trump's controversial 'Tonight Show' appearance

Looking back, Jimmy Fallon would have done some things differently.

In a tell-all interview with The New York Times, the 42-year-old host of The Tonight Show addresses criticism that he's received since heading up the NBC program, and the show's ratings decline in recent months.

WATCH: Jimmy Fallon's Adorable Daughters Help Him at Ribbon Cutting of 'Race Through New York' Ride

Last October, the New York Post came out with a report that network executives had "fears that Fallon was out of control" and were concerned about his drinking habits. The article also noted that Fallon had suffered two hand injuries the following year. The report came out over 10 months after NBC entertainment chief, Bob Greenblatt, told reporters that Fallon "doesn't have a drinking problem that any of us know about."

"I could never do a day-to-day job if I was drinking every night," Fallon tells The Times of the allegations. "That's just kicking you when you're down."

See photos of Jimmy Fallon through the years:

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Jimmy Fallon through the years
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Jimmy Fallon through the years
THE TONIGHT SHOW STARRING JIMMY FALLON -- Episode 0289 -- Pictured: Host Jimmy Fallon during the monologue on July 13, 2015 -- (Photo by: Douglas Gorenstein/NBC/NBCU Photo Bank via Getty Images)
LOS ANGELES, UNITED STATES: Show hosts actress Kirsten Dunst (L) and her fiance Jimmy Fallon clown around with a prop at the 2001 MTV Movie Awards at the Shrine Auditorium in Los Angeles, 02 June 2001. AFP PHOTO/Lucy Nicholson (Photo credit should read LUCY NICHOLSON/AFP/Getty Images)
Jimmy Fallon and Mary Louise Parker backstage at the MTV Rock & Comedy Concert at Battery Park in New York City, 5/10/02. The concert was staged as part of the first Tribeca Film Festival. Photo by Frank Micelotta/ImageDirect.
Comedian Jimmy Fallon perform at the MTV Tribeca Film Festival Rock and Comedy Concert in Battery Park in New York City. May 10, 2002. Photo by Frank Micelotta/ImageDirect
Jimmy Fallon jokes with and dresses identical to host Carson Daly on TRL at the MTV Studios in New York City. Jimmy will be hosting this years Video Music Awards live from Radio City Music Hall on August 29th. 8/14/02 Photo by Scott Gries/ImageDirect
NEW YORK - FEBRUARY 10: Actors Jimmy Fallon and Maya Rudolph attend attends the Marc Jacobs Fall/Winter 2003 Collection fashion show at the 26th Street Armory during Mercedes-Benz Fashion Week February 10, 2003 in New York City. (Photo by Evan Agostini/Getty Images)
NEW YORK - FEBRUARY 23: (HOLLYWOOD REPORTER OUT, U.S. TABS OUT) Jimmy Fallon arrives at the BMG Post-Grammy Gala to celebrate the 45th Annual Grammy Awards at Gotham Hall February 23, 2003. (Photo by Mark Mainz/Getty Images)
HOUSTON - FEBRUARY 1: Actor Jimmy Fallon poses during the MTV TRL Super Bowl edition at Reliant Park in Houston, Texas, February 1, 2004. (Photo by Frank Micelotta/Getty Images)
CULVER CITY, CA - JUNE 5: (U.S. TABLOIDS OUT) (L-R) Actor Jimmy Fallon and actress/singer Queen Latifah laugh backstage at the 2004 MTV Movie Awards at the Sony Pictures Studios on June 5, 2004 in Culver City, California. The 2004 MTV Movie Awards will air on the MTV Network June 10, 2004 9 PM (ET/PT). (Photo by Frank Micelotta/Getty Images)
HOLLYWOOD - DECEMBER 8: Actor Jimmy Fallon arrives at the Warner Bros. premiere of the film 'Ocean's Twelve' at Grauman's Chinese Theatre December 8, 2004 in Hollywood California. (Photo by Vince Bucci/Getty Images)
Actors Drew Barrymore and Jimmy Fallon make an appearance on MTV's Total Request Live on April 5, 2005 in New York City. (Photo by Evan Agostini/Getty Images)
Producer Nancy Juvonen (L) and actor Jimmy Fallon arrive for the premier of the film 'Music and Lyrics' in Los Angeles, California, 07 February 2007. (Photo credit should read ROBYN BECK/AFP/Getty Images)
NEW YORK - JUNE 04: Actor Jimmy Fallon attends Columbia Pictures' screening of 'You Don't Mess With The Zohan' on June 4, 2008 at the Ziegfeld Theater in New York City. (Photo by Rob Loud/Getty Images)
LOS ANGELES, CA - AUGUST 29: Host Jimmy Fallon speaks onstage at the 62nd Annual Primetime Emmy Awards held at the Nokia Theatre L.A. Live on August 29, 2010 in Los Angeles, California. (Photo by Kevin Winter/Getty Images)
NEW YORK, NY - FEBRUARY 28: TV personality Jimmy Fallon attends the Museum of the Moving Image salute to Alec Baldwin at Cipriani 42nd Street on February 28, 2011 in New York City. (Photo by Stephen Lovekin/Getty Images)
THE TONIGHT SHOW STARRING JIMMY FALLON -- Season: 1 -- Pictured: Host Jimmy Fallon -- (Photo by: James White/NBC/NBCU Photo Bank via Getty Images)
THE TONIGHT SHOW STARRING JIMMY FALLON -- Episode 0001 -- Pictured: Host Jimmy Fallon on February 17, 2014 -- (Photo by: Lloyd Bishop/NBC/NBCU Photo Bank via Getty Images)
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"I don't half-a** it," he later notes. "If we're going to do this, we're going to do it right. There will be a day when we can allow ourselves to be tired. I don't know when it is, but it can't be now."

MORE: NBC Entertainment Chief Denies Jimmy Fallon Has a Drinking Problem

Fallon also recalls the backlash he received in September for his lighthearted chat with Donald Trump -- which included the host tussling with the future president's hair. The 42-year-old comedian was immediately slammed by some Tonight Show viewers -- including former Late Show host David Letterman -- for being too playful with Trump and not asking him the hard questions.

"I didn't do it to humanize him," Fallon says of the hair ruffling. "I almost did it to minimize him. I didn't think that would be a compliment: 'He did the thing that we all wanted to do.'"

"They have a right to be mad," he adds. "If I let anyone down, it hurt my feelings that they didn't like it. I got it."

Fallon admits that the negative feedback did get to him. "I'm a people pleaser," he confides. "If there's one bad thing on Twitter about me, it will make me upset. So, after this happened, I was devastated. I didn't mean anything by it. I was just trying to have fun."

WATCH: Alec Baldwin and Jimmy Fallon Test Out Their Donald Trump Impressions While Playing 'Box of Lies'

See photos from Donald Trump's appearance on "The Tonight Show":

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Donald Trump's appearance on 'The Tonight Show Starring Jimmy Fallon'
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Donald Trump's appearance on 'The Tonight Show Starring Jimmy Fallon'
THE TONIGHT SHOW STARRING JIMMY FALLON -- Episode 0534 -- Pictured: (l-r) Republican Presidential Candidate Donald Trump during an interview with host Jimmy Fallon on September 15, 2016 -- (Photo by: Andrew Lipovsky/NBC/NBCU Photo Bank via Getty Images)
THE TONIGHT SHOW STARRING JIMMY FALLON -- Episode 0534 -- Pictured: (l-r) Republican Presidential Candidate Donald Trump during an interview with host Jimmy Fallon on September 15, 2016 -- (Photo by: Andrew Lipovsky/NBC/NBCU Photo Bank via Getty Images)
THE TONIGHT SHOW STARRING JIMMY FALLON -- Episode 0534 -- Pictured: Republican Presidential Candidate Donald Trump during an interview on September 15, 2016 -- (Photo by: Andrew Lipovsky/NBC/NBCU Photo Bank via Getty Images)
THE TONIGHT SHOW STARRING JIMMY FALLON -- Episode 0534 -- Pictured: (l-r) Republican Presidential Candidate Donald Trump during an interview with host Jimmy Fallon on September 15, 2016 -- (Photo by: Andrew Lipovsky/NBC/NBCU Photo Bank via Getty Images)
THE TONIGHT SHOW STARRING JIMMY FALLON -- Episode 0534 -- Pictured: (l-r) Republican Presidential Candidate Donald Trump during an interview with host Jimmy Fallon on September 15, 2016 -- (Photo by: Andrew Lipovsky/NBC/NBCU Photo Bank via Getty Images)
THE TONIGHT SHOW STARRING JIMMY FALLON -- Episode 0534 -- Pictured: Republican Presidential Candidate Donald Trump during an interview on September 15, 2016 -- (Photo by: Andrew Lipovsky/NBC/NBCU Photo Bank via Getty Images)
THE TONIGHT SHOW STARRING JIMMY FALLON -- Episode 0534 -- Pictured: (l-r) Republican Presidential Candidate Donald Trump during an interview with host Jimmy Fallon on September 15, 2016 -- (Photo by: Andrew Lipovsky/NBC/NBCU Photo Bank via Getty Images)
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In hindsight, Fallon wishes he would have addressed the comments regarding his Trump interview head-on, much like Late Show host Stephen Colbert did recently when #FireColbert started trending after comments he made about the president. "I didn't talk about it, and I should have talked about it," Fallon reflects. "I regret that."

However, the Tonight Show must go on. "I tossed and turned for a couple of weeks, but I have to make people laugh," he confesses. "People that voted for Trump watch my show as well."

WATCH: Michelle Obama Opens Up About Sasha Missing the President's Farewell, Reads Thank You Notes With Jimmy Fallon

Standing his ground, Fallon insists, "I don't want to be bullied into not being me, and not doing what I think is funny. Just because some people bash me on Twitter, it's not going to change my humor or my show."

As for the show's dip in ratings, Fallon claims, "I never, ever care. I'll know when someone fires me."

He adds, "It's not The Jimmy Fallon Show. It's The Tonight Show."

WATCH: David Letterman Talks Late-Night Television Today, Shades Jimmy Fallon -- 'I Would've Went to Work on Trump'

RELATED: See photos of Donald Trump on "Saturday Night Live":

18 PHOTOS
Donald Trump on 'Saturday Night Live' through the years
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Donald Trump on 'Saturday Night Live' through the years
SATURDAY NIGHT LIVE -- Episode 16 -- Air Date 04/03/2004 -- Pictured: Host Donald Trump during the monologue on April 3, 2004 (Photo by Mary Ellen Matthews/NBC/NBCU Photo Bank via Getty Images)
SATURDAY NIGHT LIVE -- Episode 16 -- Air Date 04/03/2004 -- Pictured: (l-r) Darrell Hammond, Donald Trump during the monologue on April 3, 2004 (Photo by Mary Ellen Matthews/NBC/NBCU Photo Bank via Getty Images)
SATURDAY NIGHT LIVE -- Episode 16 -- Air Date 04/03/2004 -- Pictured: (l-r) Donald Trump, Darrell Hammond as Regis Philbin, Amy Poehler as Kelly Ripa during the 'Live with Regis & Kelly' skit on April 3, 2004 (Photo by Mary Ellen Matthews/NBC/NBCU Photo Bank via Getty Images)
SATURDAY NIGHT LIVE -- Episode 16 -- Air Date 04/03/2004 -- Pictured: Donald Trump during the 'Donald Trump's House of Wings' skit on April 3, 2004 (Photo by Mary Ellen Matthews/NBC/NBCU Photo Bank via Getty Images)
SATURDAY NIGHT LIVE -- Episode 16 -- Air Date 04/03/2004 -- Pictured: (l-r) Amy Poehler, Kenan Thompson, Donald Trump, Seth Meyers, Maya Rudolph during the 'Donald Trump's House of Wings' skit on April 3, 2004 (Photo by Mary Ellen Matthews/NBC/NBCU Photo Bank via Getty Images)
SATURDAY NIGHT LIVE -- Episode 16 -- Air Date 04/03/2004 -- Pictured: (l-r) George Ross, Donald Trump, Carolyn Kepcher during 'The Apprentice' skit on April 3, 2004 (Photo by Mary Ellen Matthews/NBC/NBCU Photo Bank via Getty Images)
SATURDAY NIGHT LIVE -- Episode 16 -- Air Date 04/03/2004 -- Pictured: Host Donald Trump during the monologue on April 3, 2004 (Photo by Mary Ellen Matthews/NBC/NBCU Photo Bank via Getty Images)
SATURDAY NIGHT LIVE -- Episode 16 -- Air Date 04/03/2004 -- Pictured: (l-r) Donald Trump as Jerry the Janitor, Darrell Hammond as Donald Trump during 'The Prince and the Pauper' skit on April 3, 2004 (Photo by Mary Ellen Matthews/NBC/NBCU Photo Bank via Getty Images)
SATURDAY NIGHT LIVE -- Episode 16 -- Air Date 04/03/2004 -- Pictured: (l-r) Seth Meyers as Peter Fleck, Donald Trump as Gary Fleck during the 'Father and Sons' skit on April 3, 2004 (Photo by Mary Ellen Matthews/NBC/NBCU Photo Bank via Getty Images)
SATURDAY NIGHT LIVE -- Episode 16 -- Air Date 04/03/2004 -- Pictured: (l-r) Amy Poehler as Carolyn Kepcher, Donald Trump during 'The Apprentice Band' skit on April 3, 2004 (Photo by Mary Ellen Matthews/NBC/NBCU Photo Bank via Getty Images)
SATURDAY NIGHT LIVE -- Episode 16 -- Air Date 04/03/2004 -- Pictured: (l-r) Bootsy Collins, Donald Trump and Frederick 'Toots' Hibbert of Toots and the Maytals on April 3, 2004 (Photo by Mary Ellen Matthews/NBC/NBCU Photo Bank via Getty Images)
SATURDAY NIGHT LIVE -- 'Donald Trump' Episode 1687 -- Pictured: (l-r) Cecily Strong, Donald Trump on November 3, 2015 -- (Photo by: Dana Edelson/NBC/NBCU Photo Bank via Getty Images)
SATURDAY NIGHT LIVE -- 'Donald Trump' Episode 1687 -- Pictured: (l-r) Sia, Donald Trump, and Kate McKinnon on November 5, 2015 -- (Photo by: Dana Edelson/NBC/NBCU Photo Bank via Getty Images)
SATURDAY NIGHT LIVE -- 'Donald Trump' Episode 1687 -- Pictured: (l-r) Bobby Moynihan as Ronald McDonald McTrump, Vanessa Bayer, Donald Trump, and Cecily Strong during the 'Porn Stars' sketch on November 7, 2015 -- (Photo by: Dana Edelson/NBC/NBCU Photo Bank via Getty Images)
SATURDAY NIGHT LIVE -- 'Donald Trump' Episode 1687 -- Pictured: (l-r) Donald Trump and Kenan Thompson as Toots Hibbert during the 'Toots Song Intro' sketch on November 7, 2015 -- (Photo by: Dana Edelson/NBC/NBCU Photo Bank via Getty Images)
SATURDAY NIGHT LIVE -- 'Donald Trump' Episode 1687 -- Pictured: (l-r) Sasheer Zamata as Omarosa, Bobby Moynihan, Donald Trump as the President of The United States, Cecily Strong as Melania Trump, Kenan Thompson, and Kyle Mooney during the 'White House' sketch on November 7, 2015 -- (Photo by: Dana Edelson/NBC/NBCU Photo Bank via Getty Images)
SATURDAY NIGHT LIVE -- 'Donald Trump' Episode 1687 -- Pictured: (l-r) Taran Killam, Donald Trump, and Darrell Hammond during the monologue on November 7, 2015 -- (Photo by: Dana Edelson/NBC/NBCU Photo Bank via Getty Images)
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