Knowing what you are doing wrong is half the problem! I think you should go online and find a bunch of lap band friendly recipes that sound good to you, make sure they are easy! Every week I make myself a menu that I have no choice but to stick to. An example of what I do is: Breakfast: Egg casserole (so easy! Just scramble some eggs, with a little milk, cheese, Protein, veggies, and some spices and bake @ 350 until golden brown) Lunch: Mexican chicken (Chicken breast, taco seasoning, red and yellow peppers, onions- all in the crock pot for a couple of hours- YUM!) Dinner: Turkey burger with cheese and a veggie. I make sure to portion everything out and always know how many calories/ protein I am getting.
It can be simple as long as you prepare yourself. Every day I carry lap band friendly Snacks with me as well as a little Protein powder just in case I get put in a position where I need to eat and there is nothing good for me. Water is super important to me too and I make sure to get at least 64 oz but I aim for about 100 oz.
Perhaps to get back on track you should set yourself a goal and plan something special if you meet the goal. It can be really motivating to Celebrate your victories! You can do this! Just remember that you are doing this for you and a better life! Good luck!