Michel Montignac, a french business man has developed some 20 years ago a new diet basing on just eating the right thing at the right time (this involves knowing the glycemic index of food and of eating the right combinations).
The best thing about that diet is not that it
- actuall works well
- you can eat as much as you want (there is no need to eat less)
- you can even eat chocolate
that you can actually go out eating with your colleagues, following the diet rules and nobody will actually find out that you are on a diet. That is much better than those "you are only allowed to eat salad" or "only grapes" diets.