In an ongoing study, Wilson observes college students who are left alone in a room, with no phone or other distractions, for 15 minutes. "They hate it," he said. "One would think we could spend that time mentally entertaining ourselves. But we can't. We've forgotten how."
I think “And what else?” is the best coaching question in the world. It does two things: It extends the period of curiosity, and it tames your advice monster.