I’m constantly in doubt about what I’m doing, I’m constantly tortured, and that’s why I say happiness is irrelevant. Happiness is for children and yuppies. I’m not striving for happiness, I’m trying to get some work done. And sometimes the best work is done under doubt. Constant rethinking, and reevaluating what you’re doing, working and working until you feel it’s finished. And that’s an interesting point too, that you’ve got to know when to stop. Sometimes there’s a magical moment when everything comes together.