It's good you're finding more time to exercise. I hope it makes you fitter and helps to combat your lethargy and lack of energy. Have you considered using special dieting to improve your energy levels? It usually goes hand in hand with exercise for certain groups of people.
Yeah - I "try" to watch my diet and I am doing okay with it - but I can do a lot better. I have a very sweet tooth...
Won't it be better if you consulted a nutritionist/dietary expert to help set you up with diets that can help with your energy problems?