The toughest part of writing is writing until its good enough. Writing until the pickiest critic, yourself, is satisfied.
I had someone recently ask me why I have not attempted to publish the four, yes four, books I have written. Easy, they are not good enough. I am continually working on them. When I get rejected I want my best stuff to be rejected, not something I wrote in a few hours.
I actually have enough short stories to put together three more books, but who’s counting?
"Books aren't written, they're rewritten. Including your own. It is one of the hardest things to accept, especially after the seventh rewrite hasn't quite done it..." - Michael Crichton