This is that time of year when we become painfully aware of where we are not, who we are not, and what we need to do differently. Traditionally, the new year is a season of self-absorption. It’s all about what we can do to make ourselves better people. The result is that churches, health clubs, debt counselors, and vitamin shops do a booming business. But we tend to forget that the people we respect the most didn’t devote their lives to becoming the best version of themselves. They devoted their lives to making a difference in the world . . . or in someone’s world.