Katagiri Roshi says: "Poor artists. They suffer very much. They finish a masterpiece and they are not satisfied. They want to go on and do another." Yes, but it's better to go on and do another if you have the urge than to start drinking and become alcoholic or eat a pound of good fudge and get fat.
Natalie GoldbergLet's say I've directed that [writing] energy into writing my latest book but suddenly, I really want to write about an onion. I don't say to myself, "No, you have stay on the subject," because I know that the longer I stay on the subject the more boring I get. So, if my mind wants to write about an onion, it might be a deeper way to go into what I'm working on, even though it might seem irrelevant. This is how I've learned to follow my mind.
Natalie Goldberg