Almost everyone makes New Year resolutions, which is a testament to the strength of our desire to achieve positive personal change. And the research on precisely what we resolve to change is very revealing. For example, a substantial proportion of resolutions involve losing weight, getting fitter and giving up smoking, and many of these commitments are made five years in a row - with the vast majority of people failing to keep to them by June. to the multi-billion-pound diet industry. If diets w...