I love your idea of having a set of "personal commandments." How often do you find yourself revising them? Or are they meant to be more static?
It took many months to come up with my twelve personal commandments, and I think they're pretty solid. I did think of adding one more: "Choose the bigger life." But somehow the 12 seemed like a set, once I'd finished. I still think of them all, constantly. It's really a helpful exercise, to try to distill your major principles into a few short phrases.