Hi snowwonder, I really feel for you. I know what you're going through because I suffer from it too. I'm still overweight and still trying to lose it, but I think I have finally discovered the reason WHY I overeat. Understanding that is the key to changing your bad relationship with food.
After years of soul searching, I now know I overeat when I'm stressed, angry, or unhappy. Food relaxes me, makes it better, releases tension, takes the pain away .....etc, etc. But once the food is gone, the stresses of life are still there (of course!) and I feel even worse because I have to deal with the guilt of overeating and the subsequent weight gain.
For years when I was stressed, I would comfort myself by racing to the Supermarket on the way home from work to buy all my usual treats to enjoy that night. Crisps, peanuts, chocolate, haribo jellies, a big curry & naan bread and washed down with a half a bottle of wine or a few beers.
I know I can't do that anymore. I have to break the cycle. I have to stay in control of my eating otherwise my eating controls me. I still have 4 stone to lose (after having lost 4 stone). But its a slow slog. Most days are fine, but there are still plenty of days when I want to binge (I never purged, hence the weight gain).
I also went to my GP in January to get treatment for depression (I knew I was mildly depressed for many years, but I was too ashamed/embarrassed to ask for treatment). I have been on anti-depressants since January, and I do feel a lot better. However, it hasn't stopped me wanting to reach for food, unfortunately. I agree that most doctors haven't got a clue when confronted with this problem (mine suggested a food combining diet!).
I also think of it as a bad habit. I try to find other ways of coping when I want to reach for food. I enjoy listening to music, so I tend to do that now instead of reaching for the biscuit jar.
I hope some of this has helped you. Try Googling compulsive eating, as there are a few good websites. Try to make this the turning point in your life. Best of luck.