Not from "O" and not original...but very helpful! Before a potentially tempting event food-wise, have a snack with fiber, protein and a little fat to be sure your hunger is under control. This one is easily done - having the snack, that is.
The trick is not to make exceptions or excuses after arriving at the event! I guess we'll see how serious we really are about managing our weight throughout the holiday season by the way we manage ourselves when surrounded by all the attractive and tempting foods.