Boy, do I like this...

“The important thing is that there should be a space of time, say four hours a day at the least, when a professional writer doesn’t do anything but write. He doesn’t have to write, and if he doesn’t feel like it, he shouldn’t try. But he is not to do any other thing, not read, write letters, glance at magazines. Two very simple rules, a: you don’t have to write. b: you can’t do anything else. The rest comes of itself.”

—Raymond Chandler