“I’m proud of most of what I did,” Jane Fonda says in the new trailer for her upcoming HBO documentary about her event-filled life. “And I’m very sorry for some of what I did.”

Director Susan Lacy’s film, “Jane Fonda in Five Acts,” which debuted at the Sundance Film Festival last January, will air Sept. 24 on HBO.

The documentary draws on 21 hours of interviews with Fonda, who speaks candidly and frankly about her life and her missteps — including her notorious 1972 visit to North Vietnam and photo-op on an anti-aircraft gun that was targeting U.S. troops.

Also Read: 'Jane Fonda in Five Acts' Film Review: Doc Explores the Many Lives of the Actress-Activist

“I just felt like I had to become a righteous activist,” she says in the new trailer. “I wanted my life to have meaning.”

The Oscar-winning actress and activist explores the pain of her mother’s suicide, her father’s emotional unavailability, 30 years of an eating disorder and three marriages to highly visible, yet diametrically opposed, men.

“None of my marriages were democratic because I had to look a certain way,” she says at one point.

Also Read: Megyn Kelly Fact-Check: The Truth About Jane Fonda and Vietnam

The documentary also includes interviews with family and friends — Robert Redford, Lily Tomlin, producer Paula Weinstein and former spouses Tom Hayden and Ted Turner — as well as rare home movies and verité footage of the 80-year-old Fonda’s busy life today at, as she puts it, “the beginning of my last act.”

Watch the trailer above.

12 Actors Over 80 Still Killing It in Hollywood, From Ed Asner to Robert Redford (Photos)

There are a surprising number of stars who are still working
Robert Redford (born 1936)

The beloved star announced his retirement from acting in 2018 just before the release of the drama "The Old Man & the Gun."
Morgan Freeman (born 1937)

The Oscar winner was seen in a remake of "Going in Style." Next up: "The Nutcracker and the Four Realms" and the Gerard Butler sequel "Angel Has Fallen."
Jack Nicholson (born 1937)

Other than being the most male nominated for an Academy Award, Nicholson has been signed to star a remake of the 2016 German Oscar nominee "Toni Erdmann."
George Takei (born 1937)

Best known for his role on the hit TV series "Star Trek," Takei most recently voiced Ohga in the 2017 film "Blazing Samurai."
Burt Reynolds (born 1936)

This multi-hyphenate could most recently be seen in the Tribeca film "Dog Years" and Quentin Tarantino's 2019 drama "Once Upon a Time in Hollywood."
Alan Alda (born 1936)

This six-time Emmy Award and Golden Globe winner starred in the 2015 film "Bridge of Spies," Louis C.K. series "Horace and Pete" and had a recurring role on "The Good Fight" in 2018.
Donald Sutherland (born 1935)

The eight-time Golden Globe nominee starred as John Paul Getty in FX's anthology series "Trust" and recently wrapped three other movies.
James Earl Jones (born 1931)

James Earl Jones recently wrapped the indie "Warning Shot" and has voiced two of his most recent roles: Darth Vader in "Rogue One: A Star Wars Story" and Mufasa in the 2019's CG-live-action remake of "The Lion King."
Michael Caine (born 1933)

The Oscar-winning actor, who starred in "Going in Style" and "Coup d'Etat," also wrapped "The King of Thieves" and the animated "Sherlock Gnomes."
Clint Eastwood (born 1930)

The Academy Award winning multi-hyphenate directed 2018's "The 15:17 to Paris," based on the true story of U.S. soldiers thwarting a terrorist on a Paris-bound train.
Ed Asner (born 1929)

Best known for his role on the "Mary Tyler Moore Show," Ed Asner most recently wrapped up work on multiple indies and even a 2017 episode of "Bones."
Christopher Plummer (born 1929)

The actor became the oldest-ever Oscar nominee for acting in 2018 for his role as J. Paul Getty in "All the Money in the World."