Shop with a shopping list and don’t buy extra.

Like I mentioned, our shopping list is organized according to our local store. We circle major items that are printed on the list and write in anything that's not already there. We mark off what we have already and we make note of exactly how many we need of each item. THEN we go shopping. At the store we go down each aisle, picking up the items we need and matching them to coupons if we have them to use. By having a very inclusive list, we have little reason to worry about needing other items and generally there is no shopping allowed beyond the list. If you realize you need deodorant, just buy it! It's the principle of it all, shop only from the list.