I love this. I’m a big fan of setting rules for myself because it keeps me happy and healthy and on the straighten arrow and it’s easy to explain to other people, just like you said. (Also it’s a benefit that since they’re my rules I can break them if it’s really worth it to me) most of the time I’m not someone who struggles with decisions, but it does happen, and I think your “no 7s” idea may be very helpful!