Charlie Sheen is an actor perhaps known just as well for his off-screen antics as his on-screen performances. In his new memoir, The Book of Sheen, Charlie is finally coming clean on what was going on during his years of hard drugs, public divorces, and on-set disputes that came to define his later career and reputation. These days, humility, gratitude, and sobriety have come to replace his meme-able bravado. Sitting on stage with him at the 92nd Street Y in NYC, he and David Duchovny shared jokes and jabs as David sought to discover why he chose to tell his story now — and why he took such a unique literary approach. Plus, they discuss the turning point that sent him on the road to recovery, and Charlie tells us what his one “do-over” in life would be — the answer might surprise you.