The real danger of writing a great song when you're on something is that it might get you thinking that the only way to repeat that is by only writing when you're high.
I looked through our catalog year by year, and I saw that there were pockets of time when we wrote some terrific songs. Then all of a sudden, we'd go for another two or three months and there weren't great songs.
There's so much fear involved in trying to do something you don't know how to do that drugs and alcohol can become a big part of your life if you have an addictive personality or are very unsure, which most songwriters are.