Huge problems also with coke in his earlier days. Funny that he used it for the exact opposite effect that most people do.
“Cocaine for me was a place to hide. Most people get hyper on coke. It slowed me down. Sometimes it made me paranoid and impotent, but mostly it just made me withdrawn. And I was so crazy back then — working all day, partying most of the night — I needed an excuse not to talk. I needed quiet times and I used coke to get them.”