Sometimes you actually arrive at the place you’ve been working toward, and you still have to decide what’s next. We can keep running toward an old finish line without ever stopping long enough to ask whether we would still choose it today. That might be the idea I can’t stop thinking about this week: choose it again.

Harvard research found something wild: 83% of people don’t set goals. 14% set them but never write them down. Only 3% do—and they achieve...