What hasn't worked:
Slim Fast
ANY diet pill, and I think I've tried most of them
Anything advertised on an infomercial at 4am
Weight Watchers
Pre-packaged foods
Herbalife - ok it worked, very well actually, but when I stopped I didn't have any idea how to maintain
6 Week Makeover - also worked, very very well, but since DH and I had different plans, it was a huge pain to plan 12 different meals/snacks every day so we didn't stick with it long.
Atkins - why I agreed to this is beyond me, I don't like meat.
What works best for me is taking portions of several plans and combining them. I currently eat vegetarian, count calories, follow plate size recommendations from the Sonoma Diet, don't eat much dairy, and have cut out refined flours and sugars like Sonoma/South Beach recommends. I never ever feel deprived and I'm slowly losing weight - which is how I want it, so I don't gain it back this time!