Don't take criticism personally.
Your reader is responding to your essay, not to you. It may be frustrating to hear that you still have more work to do, but taking feedback seriously will make your essay stronger.
Pay attention to ideas that contradict your own.
If comments show that a reviewer doesn't understand what you're trying to do, don't be defensive. Instead, consider why your reader is confused, and figure out how to clarify your point. Responding to readers' objections—instead of dismissing them—may strengthen your ideas and make your essay more persuasive.
Look for global concerns.
Your reviewers will probably make more suggestions than you can use. To keep things manageable, focus on the comments that relate to your thesis, organization, and evidence. Do your readers understand your main idea? Can they follow your train of thought? Are they looking for more supporting ideas or facts?
Weigh feedback carefully.
As you begin revising, you may find yourself sorting through suggestions from many people, including instructors, writing tutors, and peer reviewers. Sometimes these readers will agree, but often their advice will differ. It's important to sort through all the comments you receive with your original goals in mind—otherwise, you'll be facing the impossible task of trying to incorporate everyone's advice.
Keep a revision and editing log.
Make a clear and simple list of the global and sentence-level concerns that keep coming up in most of your reviewers' comments. That list can serve as a starting point each time you revise a paper. When you take charge of your own writing in this way, comments will become a valuable resource.