Control of the mind is required, how many times do we see people go straight from wieght watchers to the fish and chip shop, Mcdonalds or KFC. Constantly we see people on a diet in cake shops where they give an embarrased look as if they're caught with thiet pants down.
These people can't help it, can't help eating, just the same as an alcoholic or heroine addict, except that of course we have to eat to be alive, simply quitting does not work. All addictions have a phycological basis, and such, controlling how we think about them can have great results. Meditation with the right music can help, it's been medically proven.