Hi Michael,
Great. Some days are really horrible, yet others can end feeling immenseley fulfilled. I work in a medical profession and the feeling is sort of the same when I feel I contributed in some small way to a patient's well being. Same for students. Especially when they're appreciative. But even if not, when a class has been successful and feel things went well, that's what keeps a teacher going back to work every day!
Barry Westling