yeah I had that too...I used my calculative nature and I am doing well now. Trust me I know how it feels and I am still overweight. I even tried a hypnotist and paid more than 5K for nothing. Best way to overcome it is meditation just 15 mins 3-5 days a week and see if that helps.
Meditation can be anything you want it to be. I just sat quietly and tried not thinking about anything. in 15 mins you should feel that pressure has been relieved from your mind, and it worked/works for me.