Who are your friends? You may want to judge on the basis of who takes care of you. It is true that your services are in demand, and that may give you the feeling of being appreciated. It is true that you value your own generosity -- it is one of your most tangible goals. In a greedy world, you know this is a rare virtue. Yet for the next few weeks, you know you need to take care of yourself, and invest more energy in your inner world. You don't need to stay home every night; but when you do, unplug the phone.