Make a collection of pictures of really big people. Clip them from magazines and newspapers. Post them wherever you eat. On the fridge, kitchen cabinets, dining room table, in your car or office, by the TV, work desk, and especially where you hide and sneak food.
Images of large people all around you may just remind you of the direct connection between overeating and obesity. And the danger of being in an overweight condition yourself.
Every time you see these images, do what I do, say a silent prayer asking God to help. Then TAKE the help that always comes; Use the spiritual strength to overcome the impulse to give in to moments of self-abuse in the form of overeating and inactivity.