In every thing I have been successful at (not much)
I literally turn it into a punishment until productive behavior becomes the norm.

Between aggression and replacement behavior is where my progress comes.
When I feel strongly like cheating or giving up, I punish myself with extra burden. I dont think a cheat meal can be anything but counterproductive. That being said though, weight loss is never something I have attempted or needed to.

I suppose it will be individual specific