I've been a tutor at the Writing Center for a almost three years, and I love my job. I sometimes can't believe they really pay me to have fun with students. What I like best about tutoring, and this is true for OWL tutoring too, is that I get to solve problems. I love that. Something that all students should know is that writing is hard because it takes so much time to find exactly the right words.
Revision is key.
Someone once asked me how to know when a paper is finished. Keep that in mind as you slog through your rewrites. You will eventually end up with a document you are happy with. If not, you ran into the deadline.