The Hangover star headed to Las Vegas last month (Apr12) to debut The Undisputed Truth, a no-holds-barred account of his life story.
The autobiographical show, which Tyson will bring to Broadway next year (13), details his drug and alcohol addictions, psychotic episodes and even his penchant for Japanese prostitutes.
Tyson admits the deeply personal show has helped him learn more about himself and move away from his troubled past.
He tells Britain's Daily Telegraph, "It's therapeutic to talk about what I've lived through in front of hundreds of people. And when you've been in rehab, you're very comfortable talking about yourself."
However, the former world champion admits he is reluctant to boast about his reform.
He adds, "I'm a major league relapse artist. I'll do two years (of sobriety) and then think, 'F**k it.'"