Don’t get saucy. Limit your added sauces, gravies and other fats, like butter. Chances are your food tastes great as it is, so there is no reason to drown it in added fat.
Stay hydrated. Drink plenty of water, and skip or limit the rich holiday beverages (peppermint lattes, eggnog, Irish coffee).
Limit alcohol consumption. Alcohol is full of empty calories, and the more you drink the more likely you are to make poor dietary choices. Most importantly, always remember to test blood sugar frequently after drinking to prepare for potentially dangerous blood sugar drops.