When getting ready to go grocery shopping I always need to make sure I have a list. We live 30 miles from Canon City, Co in the mountains and can't run to the store every time I need something.
I put a piece of notebook paper on the refrigerator and every time I run out or get close to running out I put it on the list. Two days before I go shopping I sit down and go over the list and put it in categories, such as meat, dairy, etc. I rewrite this on a new paper and then make my rounds about the house to check one more time to be sure I have everything. This was hard to get used to 10 years ago when we first moved here since we were 5 minutes away from the store then. Having this list has saved me from not having something I needed for a particular recipe I was going to make.