When people make generosity part of their daily routine, they refashion who they are. The interesting thing about your personality, your essence, is that it is not more or less permanent like your leg bone. Your essence is changeable, like your mind. Every action you take, every thought you have, changes you, even if just a little, making you a little more elevated or a little more degraded. If you do a series of good deeds, the habit of other-centeredness becomes gradually engraved into your life. It becomes easier to do good deeds down the line.
