Take it one step further by planning all of your day's meals in advance, too. After eating a few hors d'oeuvres, sneak off to the bathroom and brush your teeth. It won't be quite so appealing diving into more spinach dip if your mouth tastes minty fresh. When it comes to finger foods, use your nondominant hand to eat them with. The conscious effort you make will slow down mindless munching.
Pickles are a good low-cal, flavorful snack.
Pop a sugar-free candy after dinner to curb that desire for dessert. Make sure you're getting enough zzz's every night. Dehydration is frequently mistaken for hunger. Drink at least 8 glasses of water a day. Never eat standing up, as you're less likely to pay attention to what and how much you're consuming.