Oh, Patti! I love the smileys - and you have a way with admin.
Well, just NOT buying it has worked wonders - I don't buy cookies, and a lot of other things, because I know that I would just eat them - so I think the same trick will work for diet coke. Although, I'm worried what will happen when my dd returns from college - maybe I'll get her convinced she can go without.
I'm also looking forwards to saving some money!!