I really hate the dentist, but I need to get braces for my crooked teeth, what should I do?

Learn to Love. Don't know what your past experiences were at the dental office, but nowadays most offices do everything possible to make their patients comfortable. Get a recommendation from a friend or co-worker and go for a consultation. You'll know at that first visit if the office is right for you.
See a pro. Find an Orthodontic Specialist which whom you feel comfortable. As you'll need frequent adjustment visits, you need to find someone you trust. Ask your Dentist for the names of the best Orthodontic Specialists in your area and try them on until you find one that fits. Good luck.