the essay in its entirety is worth reading, but here's the crux:
"You want to know the meaning of life? This is your highest calling: You are called into the dynamic co-creation of the cosmos. This breath is your canvas and your brush. These are the raw materials for your art, for the life you are making. Nothing is off limits. Your backyard, your piano, your paintbrush, your conversation, Rwanda, New Orleans, Iraq, your marriage, your soul. You're making a living with every step you take. So when you make a living, do not merely make money. Why settle for cash when joy is on the line? You feel a thrill when you dance, when you sing, when you finish your poem; even when you sweep the room you see order pressing back against the chaos. So when you create, never settle for making a living -- at least not the way that the world might define that phrase. When you make a living, you are speaking a new world into existence. You are creating grace within the confines, you are co-signing God's blank checks."