If you need to be perfect, it's hard to press the 'ship it' button. Difficult to hire someone who makes things happen (because you'll be responsible for what happens). Frightening to put yourself into a position where you're expected to introduce new work.
The only way is forward. Forward moves us from what we have now (perfect, or at least we're no longer living in fear of what's not right) to a world filled with nothing but imperfect.
If you want motion, the only way is through. We get to the work we seek by passing through imperfection.