Working hard and feeling dutiful, just don`t do too much. Your emotions will be rather tied up with your working situation, and indeed with your health just for a couple of days. If you`re feeling jittered and jangled emotionally, you have to watch that your body doesn`t sag a bit. Make sure you`re putting energy into eating well, resting, relaxing, exercising, doing all of those kinds of things. Boost your stamina by looking after yourself well.