In one of his speeches, Obama said "Better is good". I think about this a lot. It feels like better compounds over time, too. Small improvements add up. From experience, nothing new is perfect the first go round, so sitting around trying to come up with a perfect design is counterproductive because there's no such thing.
"impediment to action advances action. what stands in the way, becomes the way".
Obama - what a time to be alive
It's perfectionism.
I always thought perfectionism meant extremely high achievements (for too great of a cost). But it can also be quitting without any progress because you can't accept anything less than perfect (which may or may not be achievable). Perfectionism can be someone procrastinating on a large task.