Libby, take care of yourself. I hope the doctors figure out what's wrong and how to help you.
Jho - you have a great quote in your signature - keep reading it! Just keep doing whatever your plan is, one day at a time. Make some daily goals if you haven't already. Then focus on meeting your goals each day. For me, looking at long-term changes and goals was too discouraging. But I set some simple goals and could concentrate on trying to make my goals each day. Each day I meet your goals is a success, regardless of whether I lose any weight.
Energy-wise, I think there's often a spiraling effect. When you cut the crap out of your diet and eat more healthful foods, you often have more energy. When you start to exercise, you start to feel more energetic and want to do more.
Age 61, Height 5'9"
March 2010 145 lbs, Jan 2013 173 lbs
1st Goal 145 lbs 5/25
New goal 140