I'm perfectly happy doing nothing. I'll hang around the house and take the dog to the park.
Almost any film that you do is an opportunity to open you up and make you more aware of an area that you might not be thinking about. That's what is kind of cool, or one of the cool things about this profession.
When you step on the treadmill, make a commitment. Do, say, 3 miles a day. And don't get off until you finish. It doesn't matter what speed you're going. Just don't get off.

