I have known strong minds, with imposing, undoubting, Cobbett-like manners; but I have never met a great mind of this sort. The truth is, a great mind must be androgynous.”

Set aside a half hour to picture yourself at age ninety and to put yourself in the mind of ninety-year-old you. What does your life look like when you view it from that vantage point? What have you accomplished? What have you contributed? What are your regrets? This isn’t an easy exercise—neither intellectually nor emotionally. But it can be enormously valuable. And it can help you satisfy one of Viktor Frankl’s most powerful imperatives: “Live as if you were living for the second time and had acted as wrongly the first time as you are about to act now.