Revising can be the fun part...and the hard part. You are really excited to see what you wrote and how the story turned out just to see that you made too many mistakes and things just don't make sense.
Don't be too hard on yourself! Drafts are called "drafts" for a reason, and they won't be perfect. The best thing we can do is learn from our mistakes and make our manuscripts better. While the revision stage can be long and frustrating, know that actually writing the story was the hardest part and you are already done with that!
Is the first draft done? Do you want to look it over a few times before you start editing and writing it again? Check out these checklists below and make a copy of them to help guide you through the rereading process. Although they talk about NaNoWriMo, they still serve the same purpose.