I used to have terrible binges, but post-binge I started writing down how I felt - in real detail. Angry, sad, sick, disgusted with myself, nauseous, disappointed, guilt, whatever it was I wrote it down and described what led up to it, what I ate, how I felt everything.
Then the next time I wanted a binge, I forced myself to read it. It's so easy to just be thinking about the foods, how they will taste, how "good" they will make you feel in the moment, but so hard to remember how truly crappy you feel afterwards.
It really really helped. Reading it through made me think about the consequences, and whether I could really face another post-binge comedown. I was really sick and tired of the emotional rollercoaster, so I decided I just couldn't do it anymore.
It's no miracle cure by any means, but I'm 20-odd weeks since my last binge now, and feel a lot better emotionally.