Matt Morgan: "Less grit, more quit" has its benefits.

Sundays are much better nowadays. They used to start with gentle encouragement for my daughter to practise the piano. Then mild threats. Then bribes. Five minutes of her pressing the wrong keys would be followed by, “Do I have to do it today?” The sunk costs of the grades she’d already done and the books we’d already bought would lead me to exclaim, “Yes!” More grit needed, I’d think. Monday morning at work, I’d try to put this grit to good use. We all have projects we keep deferring, roles we’ve grown tired of, or entire jobs that just pass the time. Yet we don’t quit. We grit. Because quitting is a dirty …