The pain of making the necessary sacrifices always hurts more than you think it's going to. I know. It sucks. That being said, doing something seriously creative is one of the most amazing experiences one can have, in this or any other lifetime. If you can pull it off, it's worth it. Even if you don't end up pulling it off, you'll learn many incredible, magical, valuable things. It's NOT doing it when you know you full well you HAD the opportunity- that hurts FAR more than any failure.