When you ask people how they’re doing these days, a stock response is “crazy busy.” That’s “a boast disguised as a complaint,” says blogger Tim Kreider. It is not the complaint of a person who has to work three jobs to make ends meet. Their response would likely be, “I’m tired.” Busyness for professional people is often self-imposed to inflate a sense of self-worth. Kreider wonders whether keeping busy is a cover-up for the fact that much of what we do doesn’t matter. “Idleness is not just a vacation, an indulgence or a vice; it is as indispensable to the brain as vitamin D is to the body, and deprived of it we suffer a mental affliction as disfiguring as rickets,” Kreider says (Opinionator, New York Times, June 30).