Shop the perimeter of the grocery stores. All of the processed crap is in the middle. Keep you proteins high and carbs complex. Keep good fats in the diet. Do yourself a favor and do not eat to little. Going from extreme to extreme is one tendency that can be hard to break. Your body needs the energy. Chicken, fish, lean red meats, lots of green, whole grains. Keep a good schedule for meal planning to burn the maximum possible calories daily.