My "diet" is not really healthy, but it works, and I heard some asshole just made a few million bucks selling a book with basically the same idea summed up in 300 pages of text. 8)
Anyway, what I do is I eat rarely. Ever notice that if you eat a big brunch you can usually eat more at dinner time? Well, I usually eat nothing for most of the day - which is fairly easy because I feel somewhat nauseated most days. I only start getting really hungry after 17:00, and if I smoke pot.
I don't drink anything carbonated, because I read an interview with an eating champion from Japan (the Kobayashi guy) who said all he needed to be able to expand his stomach was a lot of carbonated water. The gas helps expand the stomach!
So basically, after a few days of eating one dinner and not much of anything else - the amount I can eat at dinner decreases. I get full from far less, and start having more and more leftovers.
The great thing is I can eat what I want, I don't really watch what I eat much at all - just how much. If I'm eating something fattening I'll have less - and basically I try to savour every meal and make it as appetizing as possible.
Again, I have some nausea problems, so I can't really imagine eating a lot of something that's not appealing - I'd rather eat a bit of something very appealing
However, I haven't found any place for sugar in this diet, it's bad for my stomach and just makes you want it again the next day. Two days after you quit sugar you don't need it any more, imho.
My top weight before I began this (undoubtedly unhealthy!) cycle was about 120kg (roughly 240 pounds, I think), I currently weigh about 75 (150). Still, should work out more - I've no doubt lost muscle mass. I'm 187cm, which I figure is just over six feet.
--- G.