I am recently banded and have not had any fills yet so food is still an issue sometimes. I have a few cute outfits I bought a size or two smaller than what I can wear and when I get hungry I think about how much I want to fit into that smaller size. I keep one outfit out of the closet so its a constant reminder. It helps me from messing up and eating something I know I shouldn't.
Another trick I have found is that I have an app on my phone to track calorie intake and calories burned with exercise. I make it a competition to keep the intake lower than the burned. Good luck!