The movie also marks Cooper's directorial debut.
It's that past that Cooper now says helped his work as Jackson.
"Anytime you're trying to tell the truth you need to go to places and use things that have happened to you, or you've read about or experienced," Cooper told Variety.com at the Toronto International Film Festival premiere.
"And that's all part of the beauty of turning whatever things you've gone through into a story. I find that to be very cathartic. I remember learning that in grad school, our teacher said all the insecurities, all the dark stuff you get to use that and that's really the truth," he added.
At the time of the Walters interview, Cooper said he was sober from drugs and alcohol for 11 years.
(This story has not been edited by Business Standard staff and is auto-generated from a syndicated feed.)