B.,
The only "kids" in our house prefer Milkbones to cookies, so it is just my husband & I dealing with treats.
There are times when we end up with a lot of sweets,etc. in a short period of time, esp. around the holidays. That's when I say "We will save 2 servings each for ourselves, & the rest goes to the office!" Because seriously, we just don't need to consume that much food.
As for snacks & sweets that we purchase, my general rule is that it needs to be "high maintenance". For example, ice cream is high maintenance - I have to get out a bowl, spoon, chocolate sauce, wait for the ice cream to soften a bit, it all needs to be prepared in the kitchen... as a result, I only have it occasionally.
A package of cookies, or bag of chips, on the other hand, can be set next to me on the couch & mindlessly consumed. Before I know it, one serving size has become the entire package!! Not good.... so we tend not to buy them. Or if my husband does, he is thoughtful enough to hide it from me, & bring out a couple cookies as a surprise snack. It's all I get, so it's all I eat.
I'm trying something new for our lunches - I bought a couple snacks (Chex puppy chow & specialty potato chips), along with snack-sized ziploc bags. The plan is to open the snacks & portion them out into the ziplocs. Then, take one for lunch each day. We'll see how well I do at not grabbing all the ziplocs out of the cupboard when I am bored & watching TV! =-)
Wish me luck... T.