I know exactly what you mean! I've decided this year not to have those bags of treat size Milky Ways and Mars bars in my cupboards (which I always open early, eat and then have to buy more anyway!). Any child unfortunate to knock on my door this year will be offered Weight Watchers cottage cheese and fat free rice crackers, the only snacky things in my house at the moment!
Stay strong, Kempyd, and don't let that candy get you!