This isn't groundbreaking or anything, but at the end of each day I'd like to ask myself:
Did I do something that helped students learn, helped students gain confidence in themselves, made students feel capable and valued?
Did I do something that helped teachers grow, helped teachers reflect, inspired teachers to help students learn?
Was I patient? Kind? Empathetic?
Did I see the big picture, and paint the small details?
If I can answer yes to each of those I think each day will be a productive, fulfilling one.