How to leave everything eighty-eight percent done

I hate editing.
When I write something new, I try to go over it right after I've finished it, then I let it ferment in my drafts for a while, revisiting it every once in a while until it's all edited and seems good enough to publish.
The problem is, if I wait too long I become bored with the piece and it never seems good enough to publish.
Therefore, I end up never finishing anything and feeling like a failure.