Don't eat the same thing for breakfast, lunch and dinner every day. Three times a week, rotate three meals of your choice. For breakfast, cereal is okay, as long as it's high in fiber and whole grains and low on sugar. Oatmeal, Greek yogurt or eggs are good choices, as well. Fun tip: Always include fruit.
For lunch, rotate meals more frequently. Need ideas? Salads with low-calorie dressings, sandwiches on whole grain (minus the mayo), eggs (unless you had them at breakfast) and broth-based soups (no cream allowed) are all great choices. Again, always include fruit or a side of vegetables.
For dinner, rotate five healthy meals that include foods like chicken, fish and whole grains. Make veggies a staple. You can get creative; just be sure to stick to the proper ratio of fruits and veggies.