I find that when I eat some protein in the morning, I have more energy all day long because I've gotten off to a good start.
In the morning I try to eat either some high-protein cereal or two eggs with dark toast. Then for a mid-morning snack I have yogurt or peanut butter on a slice of bread or some cottage cheese. At lunch and dinner I have veggies, a little in the carb department, and I go easier on the protein. It really seems to have helped me feel better, and without adding additional exercise to my day I've lost 15 lbs. in two months.