TOPS stands for Take Off Pounds Sensibly, and it is not a diet per se.  It is a support organization similar to Overeaters Anonymous, though not as drastic.  Members can share fitness and nutritional tips with each other in meeting settings, but the organization itself does not endorse any meal plan or philosophy.  If you feel you can benefit from a group support format, this might be helpful. Remember though, support is just one element of a successful diet plan, and not nearly enough for the vast majority of people.