Hey. I have an eating disorder (I think, if you do, it never goes away. Its kind of like, you're always an alcoholic....) I'm coping well lately though.
To me, its a question of "what do you do when you feel stressed, helpless, etc?" Its a coping mecanism to deal with something else. So you have to deal with that something else before you can expect the eating disorder to go away.
See, I've tried to just deal with the disorder (sometimes purging, but more anorexia for me - control issues) but I always end up just trading it for something else (like smoking). If that is your tool to deal with stress (or any other emotion) you cannot just take that tool out from under your feet and expect to be able to stand. So, you have to deal with the stress....
You might, though, want to try to add a new, more positive habit into your life, that might eventually be able to replace the binge-purge cycle as a coping mechanism . Like - yoga, jogging, or reading. Something that you actually won't mind reverting to when you feel out of control. Don't take away the food yet - just add in something else, get to become comfortable with it, so you have another option when you feel that way.
hope some of this is helpfull....... its such a hard problem, and there are so many people who deal with it and are too scared to admit it (like...another disorder we might all be familiar with!) congrats on being able to identify it and own up.