Either drink black coffee or do the other things in moderation. Whatever you do, don't start on all these ghastly low-fat or sugar substitute non-foods. They're just chemicals. There is also good evidence that low-fat food has the opposite effect from that intended - it's so unsatisfying that people have more, whereas a bit of cheese, butter, cream etc is full of vitamins and is actually nourishing, and so long as you don't binge on such foods, they are actually useful to your body. Try not to use refined sugar in any way, or at least to keep consumption low. Replacing with sugar substitutes does you no good and may do harm (as aspartame was proved to do).