The worst thing you can do is censor yourself as the pencil hits the paper. You must not edit until you get it all on paper. If you can put everything down, stream-of-consciousness, you'll do yourself a service.
My mother wanted me off her hands. She was a working woman. She designed clothes, and she was a celebrity collector. It's my mother's ambition to be a celebrity.
If you force yourself to write away from the piano, you come up with more inventive things. If you're too good a piano player, as some composers are, the music may become flavorless and glib. And if you're not a very good pianist, you're limited to the same patterns.
Making lyrics feel natural, sit on music in such a way that you don't feel the effort of the author, so that they shine and bubble and rise and fall, is very, very hard to do. Whereas you can sit at the piano and just play and feel you're making art.
All the best performers bring to their role something more, something different than what the author put on paper. That's what makes theatre live. That's why it persists.
I love the theater as much as music, and the whole idea of getting across to an audience and making them laugh, making them cry - just making them feel - is paramount to me.