seeallsides said to keep a picture of yourself at your heaviest and least attractive. Good idea, but depending on your personality, either do that or keep a picture of yourself at your thinnest, at your goal weight, and tape it to your fridge or nosh cabinet. The fat picture may keep you from eating because it grosses you out and/or reminds you that if you eat what you want to, you’ll just look worse, or the thin picture will keep you upbeat and give you incentive to avoid the food (“if I don’t eat it, I can look like that again!”). Also, maybe keep your weight (or weight log) posted somewhere in the kitchen to remind you of your goal.
Good luck!