My best tip is to equate the foodstuff to exercise equivalent. Ask yourself: How much exercise would I have to do to not gain weight by eating this junk? A cho

My best tip is to equate the foodstuff to exercise equivalent. Ask yourself: How much exercise would I have to do to not gain weight by eating this junk? A chocolate bar is roughly equivalent to, say, a 30 minute jog. If you think that what you're about to eat is as bad for you as a 30 minute jog is good (or that they basically cancel each other out), it doesn't seem quite so appealing. Then if you choose the apple instead, you've done the equivalent of a 30 minute jog better than the quantum-choice-alternative-less-disciplined-and-slightly-fatter-you. Before you eat any junk snack, take a long look at the nutritional information and think about what it is going to do to your body.