OH, and the "wait, do I have enough?" That is one of the exercises that I use. But often the answer is "I don't know."

to use mustard as an example: we use a lot of mustard. So I go to the store, mustard is not on the list, but it is on sale. I think "how soon until we need mustard - i don't know. Better get one. It's a really good sale. Better get two." Then I come home and while randomly stuffing things into the pantry closet in the basement, I realize the sale was also on last week and I did the same thing. Apples live in a bowl on the counter. I never buy too many apples.