I think everyone at some point comes up against a wall. Curiously, though, if you continue working, you might readdress that idea from another direction. If you didn't try something, you'd never have anything; if you didn't make an attempt to make the work, it wouldn't exist. There have been times when I could not work, and I would just go and sit down in the studio and wait to see what might happen. You can't always just go and take an exotic trip and come back and make something.