A joke I read in a David Foster Wallace book went something like ...
There was an employee at an ad agency who did good work but took a little too long to complete his assignments. One day the boss comes up to him and asks "Johnson did it ever seem ironic to you that the work paralysis rhymes with perfectionist?".
The employee thinks about it and says "Yea I think I see your point about perfectionist and paralysis being somewhat interrelated like that but there is actually a 't' on the end of the word 'perfectionist'. So even though I think you have a valid point, those two words don't really rhyme like what you're saying".
The boss looks at him for a second and says "Well, close enough".
Well, by nature, perfectionism can be crippling. The DSM doesn't classify it as a mental disorder, but most people in the field note its similarities with something like OCD and other anxiety-related disorders.
Personally, I've found perfectionism can be beneficial if one embraces the reality that they will never achieve the perfect X. The journey is in the trying to get there (and of course, knowing when to stop.)
The employee thinks about it and says "Yea I think I see your point about perfectionist and paralysis being somewhat interrelated like that but there is actually a 't' on the end of the word 'perfectionist'. So even though I think you have a valid point, those two words don't really rhyme like what you're saying".
The boss looks at him for a second and says "Well, close enough".