In another exemplary post, Self truth (and the best violinist in the world), Seth Godin considers a frequent failing of many who use technical proficiency as an excuse for not shipping. He wrote:

The quest for technical best is a form of hiding. You can hide from the marketplace because you’re still practicing your technique. And you can hide from the hard work of real art and real connection because you decide that success lies in being the best technically.

Sadly Seth's post resonated and I know exactly what he's talking about. What I have learned is that for those of us who hide behind perfectionism, if we can build something to even 70% of what we consider acceptable, it's probably far ahead of what most people consider okay. It is quite safe to let go.