 Impartial moral theories often seem to give very demanding answers to this question. This is easiest to see for utilitarianism. Utilitarianism tells me to put my dollars wherever they will do the most good. In the hands of a reputable aid agency, my dollar could save a child from a crippling illness, and so I am obligated to donate it to the aid agency. I should give my next dollar to an aid agency, and I must keep donating till I reach the point where my own basic needs, or my ability to keep earning dollars, are in jeopardy. Most of my current activities will have to go. Nor will my sacrifice be only financial. According to utilitarianism, I should also spend my time where it will do most good. I should devote all my energies to aid work, as well as all my money.