Yoy know, I've never had a diet work for me - sad but true. Finally, I just decided to watch what I do. I figured out how many calories I burn a day, and then how much I could eat. If I want to eat more, then I do more. If I eat too much, then I eat less the next day - and do more.
These things help me burn -
One hour of any aerobics, step or yoga class
Walking uphill on the treadmill (without holding on)