You treat ideas like cats: you make them follow you. If you try to approach a cat and pick it up, hell, it won't let you do it. You've got to say, "Well, to hell with you". And the cat says, "Wait a minute. He's not behaving the way most humans do". Then the cat follows you out of curiosity: "Well, what's wrong with you that you don't love me?"
Well, that's what an idea is. See? You just say: "Well, hell, I don't need a depression. I don 't need to worry. I don't need to push". The ideas will follow me. When they're off-guard, and ready to be born, I'll turn around and grab them.
Bradbury i essayet Shooting Haiku in a Barrel fra boka Zen in the Art of Writing.