"Revise, revise, revise. I cannot stress this enough. Revision is when you do what you should have done the first time, but didn’t. It’s like washing the dishes two days later instead of right after you finish eating. Get that draft counter going. Remove a comma and then print out another copy — that’s another draft right there. Do this enough times and you can really get those numbers up, which will come in handy if someone challenges you to a draft-off. When the ref blows the whistle and your opponent goes, “26 drafts!,” you’ll bust out with “216!” and send ’em to the mat."
One of 10 rules from this New York Times article by Colson Whitehead.