When I was a kid, I enjoyed going to the grocery store with my parents. I volunteered to get, to return, or to pick something, and arrange the items on the checkout counter. I also insisted on buying some things for myself, but I was not all the time given permission to buy any thing that I wanted. With this experience early on, I learned to buy things that are only needed, and to never go beyond the allotted amount of money for grocery shopping.