This is a simple one. Eat a piece of fruit or raw veggies 1/2 hour before you eat dinner. This will curb your appetite and prevent you from overeating at dinner time. Just before I start to cook dinner, I eat a small apple or 1/2 of a large apple. That way I am not constantly "test tasting" my dinner during preparation. You can literally eat a meal while cooking dinner. And if you bring your lunch or work, eat a piece of fruit in morning 1/2 to 1 hour before you eat lunch. If is even more important to do this if you are eating lunch out. That way you won't throw caution to the wind and order the burger and french fries.
Another good reason to eat fruit before your meals is better digestion. Fruit digests quicker than vegetables, protein, and grains. Fruit takes only a couple of hours to digest, whereas, red meat takes several hours and sometimes days. If you eat your fruit with your meal or after your meal, what happens to the fruit in your digestive tract? Well, while everything else is digesting, the fruit is fermenting. The fermentation process in your intestines causes flatulence. Yes, gas! So if you are wondering why you are flatulent, try eating fruit at least 1/2 hour before or 2 hours after meals. If you have a problem with fruit no matter when you eat it, then stick with the raw veggies.