Fuck up fast. And fail harder.
Great quote from Caterina Fake (co-founder of Flickr) from this Inc interview:
We did all kinds of dumb, stupid things. But our unofficial slogan was, ‘Fuck up fast.’ Make mistakes rapidly, learn from them, and move past them.
Excellent advice. And one echoed by this WK+12 project: Fail Harder (link to QT movie).