Funnyman Darrell Hammond has opened up about his long battle with drugs and alcohol in a revealing new memoir.

The former Saturday Night Live regular is sharing details about his personal life and abusive childhood in the book God, If You're Not Up There, I'm F**ked.

In an excerpt, obtained by the New York Post, he writes, "I kept a pint of Remy (Martin cognac) in my desk at work. The drinking calmed my nerves and quieted the disturbing images that sprang into my head... when drinking didn't work, I cut myself."

And in 1998, Hammond confesses he was in such bad shape, he was admitted to the New York Hospital after being removed from the NBC TV studios in a straitjacket.

However, his addictions only grew worse in 2002.

He continues, "I'd started adding an obscene amount of cocaine to my binges... I had to be creative about how I did it without other people catching or letting it interfere with the work. At least too much."