As long as it's not done, no one can look at it and find it lacking. I tell myself I'm still perfecting it, but really I'm keeping the moment of judgment from ever arriving. If I never call it finished, I never have to hear that it wasn't good enough.
More people experience this than they realize.
You keep work unfinished so it can never be judged and found wanting.
If this sounds familiar, the Library can help you find the bigger picture.