Rewriting, or revision, is something every writer faces, it’s helpful to be aware of common mistakes so you can avoid them.
Your book is finished. You’ve written a first draft, and maybe you’ve revised it—maybe even several times. You wonder if it’s “finished.” It might be. You might have a perfect gem on your hands. However, you might want to take another look—a slow, careful look—after you’ve let it rest for a week or two.