The only thing I can suggest is taking it one day at a time. Any kind of eating disorder is similar to all addictions.. once you start and find that release its hard as hell to quite. A good mantra is "just for today." Don't try to think of forever, just literally do it for Today and then tomorrow.. just do tomorrow. I think its wonderful you want to make a change in you life, and I wish you the best of luck. You are not the only person out there, you are not alone.. and feel free to keep us posted!
I agree with seeing a therapist.. It is really truly amazing how much it can help.