The German philosopher Martin Heidegger wrote that authentic living requires keeping both life and death in mind at all times, Burnett explains. He called it “dasein,” literally, human be-ing. Few of us are able to do it. It is, perhaps, only human nature to avoid at all costs thinking of life’s ultimate, unavoidable conclusion. Maybe that’s the attraction of busyness, she says. If we never have a moment to stop and think, we never have to face that terrifying truth.