Charlie Sheen opened up to Dr. Oz on Monday, getting candid about a major turning point in his life.

“It was on that flight back from New York [after appearing on the Today Show],” the actor said about his sober “journey.”

The actor, who says he’s been clean from drugs and alcohol, recalled a period in his life where he once shunned all drugs and alcohol. “There was a stretch where I didn’t drink for 11 years. No cocaine, no booze for 11 years. So I know that I have that in me,” the 50-year-old star shared.

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Sheen’s relapse came four years ago, he revealed, when the weight of keeping his HIV-positive diagnosis was just too much to handle. I wanted “to suffocate the anxiety and what my life was going to become with [HIV],” he explained, before adding that drugs and alcohol “only made it worse.”

With his illness now out in the open, the actor told Dr. Oz that he’s feeling “focused, sober, [and] hopeful.”

Watch a clip from the interview below.