When I drive my car I sometimes marvel at all of the adjustments a driver needs to make, split second by split second. We watch carefully, listen, adjust our course a little to stay in the same lane, change lanes, stop for traffic signals, and avoid hitting pedestrians. As I tell my children, if you daydream in class for fifteen minutes, no big deal. If you daydream for five seconds while driving you could be dead. When I drive I pay strict attention.

Driving a car, or living your life, is...