Most diets would have you cutting things out from your diet; they are about denial and discipline.
You can do something as simple as drinking two cups of water before a meal to fill your belly a bit so that you don't overeat, or change up your cheese from dairy to nondairy.
Though I'm vegan and advocate that others eat a plant-based diet, I know that many people aren't quite ready to take that step in whole.
Whole foods like grains and beans release their sugar very, very slowly because of the fiber in them, and they don't give you a sugar rush. They feed your cells as needed, and as a result, you have loads of stable energy that powers you through the day.