Most personality traits and psychological features have a mixture of adaptive and maladaptive characteristics. Few are all good. A deep sense of the opportunit

Most personality traits and psychological features have a mixture of adaptive and maladaptive characteristics. Few are all good. A deep sense of the opportunity cost of time—which I how I think of the author's point—can be good and bad at the same time. If it fills you with renewed vigor to make the most of today, great. If it leaves you riddled with remorse and convinced that you have already lost the game and there's no point in trying, not so great. It can be a delicate balancing act to fix the maladaptive parts of our brains without throwing off the adaptive parts too.