I overeat for emotional comfort, I know that, but the reasons behind that for me is pain, loss of job, marriage and other things. The best thing I could suggest is some counselling. You need to find the reason behind why you eat, and find ways to manage it. I have been seeing a psychologist for 18 months and it has helped me enourmously.
I wish you luck, it's not an easy thing to change.
They say life is a bowl of cherries........... we just have to learn how to spit out the pips!