A new book on dieting by Traci Mann of the 'Eating lab' at the University of Minnesota points out some of the fallacies in the commonly accepted concepts of success and failure associated with 'Dieting'. Turns out that, according to her research, most of the things that I thought about dieting are untrue.
One thing I always thought to be true is that diet companies all lie! Their objective is to make money and they therefore bend the truth to their profit's satisfaction. Not true would be that gaining all the weight you lost is YOUR FAULT (i.e. a lack of willpower) and not the 'diet'.
Turns out that there are so many physiological, nuerological and hormonal changes taking place because of the 'diet' that putting that weight back on is to be expected! Wow!