In my rough notebook, I have noted down some core principles that guide architects & designers. When something is to be built, perhaps one recalls to mind the simplest values:
Durability: It should stand up robustly and remain in good condition
Utility: It should be useful and function well for people using it.
Beauty: It should delight people and raise their spirits.
These words help guide many things. As one builds good habits, or a building, or anything in between, a recalling to mind of some basic thoughts.