On an author loop I'm on, Tymber Dalton posted this reply to a new author who was discouraged over her first round of edits. I loved her reply so much that I asked if I could use it on my blog. Well, great minds think alike, and she'd already posted it to her blog.
If edits are getting you down, read Tymber's The Edit Process: of Tires and Pastry Chefs:
You'll find Tymber's take on editing encouraging and entertaining.