One of my favorite quotes regarding both creativity and film making is from writer/director/everything Robert Rodriguez.  He always shoots multiple projects at the same time, and appears to be in constant motion, from a creative and filming perspective. When asked about this trait of his, he responded by saying:

“I always pack one or two projects in at a time. If one is not successful, I won’t question my instincts if I’m already on to the next thing. A career is like a train. You have to keep laying that track in front of it. I read about this art class once. If half the class made 50 clay pots, they’d get an A. The other half had to make one perfect pot. As the one half cranked through their 50, they made 10 perfect pots because they figured out how to do it. The people concentrating on the one pot turned it to mud because they overworked it.”

I tend to agree. Perfection in creativity is stifling, and can kill momentum. In turn, perfection kills making mistakes. And mistakes in any field, especially the creative ones, are the only way we learn and become better.