I have the same problem!!
A friend recommended I eat a bowl of cabbage/salad something low cal but filling and eat before the party. That way I can eat only so much when I get to the party. It's not the best method, but since I'm always sucking in my stomach at parties maybe it will keep me from devouring everything while I'm there! and maybe I'll be more picky with what I want to try?
Sweets/carbs are my nemesis!!
09/15/2014---------- (173lbs)-started grad school!
01/08/2015 > 40-35-43 (179lbs)-new year, new me!
Lowest recorded weight as an adult -->160!