Try to put things in perspective, Danielle. Perfection is not attainable, so reaching for that will only make you miserable. rate your work as objectively as you can on a scale from 1 to 10, and set a cut-off point for yourself. Maybe 8. Promise yourself that when you attain 8, you'll quit revising. That's worked for me in the past -- I've been through the "I can make it a little better" trap many times myself.