The philosopher John Perry has a humorous essay called "Procrastination and Perfectionism" that gets to the heart of the matter in a different way:
> Many procrastinators do not realize that they are perfectionists, for the simple reason that they have never done anything perfectly, or even nearly so. […] Perfectionism is a matter of fantasy, not reality.
(More at https://web.archive.org/web/20111120152858/http://www.struct...)
Minor pedantic point about the aticle: IIRC, the quote about Gauss from E. T. Bell was more about Gauss "hiding his tracks" like a fox with its tail ("Had he divulged what he knew"…) rather than taking too long because of perfectonism.
(This comment was typed with a 5-minute timer! It feels very uncomfortable to just hit submit without cleaning it up, but I've come to realize that that discomfort is part of growth.)