Add bell pepper, mushrooms and parmesan cheese to the red sauce. The food choices I gave you are just a few examples. Learn to be creative with your food. Do not get in a rut of eating the same food everyday. All of the foods are all in a balance for protein, carbohydrates and fats.
Most people live mainly on carbohydrates.
Adding protein and unsaturated fats helps the blood sugar stay leveled. When the blood sugar is low, that is what makes you feel tired and hungry. When it gets to high, it strains certain body organs to work harder. It is also important to make a habit of eating fresh food because your body can process it easier. Processed food has so many extra ingredients to help it stay on the shelf longer.