As a teacher, you are expending your energy educating, dealing with, caring for, nurturing and encouraging young people. At some level at least, you know that this is worthwhile even when the job feels overwhelming and the balance of your life needs attention. In fact, this knowledge probably has a good deal to do with why you went into the profession in the first place. Teachers often feel-know-that investing this energy, time and attention in pupils will bring them closer to achieving their potential. But the bottom line is that the job, and all it entails, can both sustain you and exhaust you.