Cookie Monster

Going to Grandma's house is great, but going to Grandma's house usually means FOOD. Lots of lots of food. And lots of foods I normally wouldn't eat, like cookies, candies and danishes. I was literally eating to the point of nausea. I know it's not good for me, but Grandma can't eat all the food by herself! She filled that candy jar for us! Now that I'm back at home and trying to get my eating back to normal, I'm going through some serious cookie withdrawals. I just want cookies, lots of lots of cookies. All I can think about are cookies. I'm trying to let the craving pass, but I know if I say, "I'll have cookies just this once" then tomorrow will roll around and I'll end up getting cookies again. Why are cookies so darn addictive? (Seriously, if anyone knows, I'd love to hear it.) Argh. Does anyone have any ideas on how to quell the cookie monster?