Food addiction is the hardest addiction to kick because you can never fully let go of it. It's hard to moderate yourself, since you need food in order to live. I have a similar problem.
I am addicted to food, though I have cut back my eating habits a whole lot. I used to eat fast food on a day to day basis and now I can turn a blind eye. It took a lot of patience and determination to finally give in and start losing weight.
I am also addicted to pain killers, though I do not take them anymore. I cannot be prescribed any sort of opiate since I take full advantage of them. I never thought I'd become addicted to something so serious, but alas, I'm only human. I won't touch the stuff now.