“As a rule, I found that each person is especially good at one of these three phases and especially bad at one. Each of us has a transition superpower, if you will, and a transition kryptonite. Our research suggests that people gravitate to the phase they’re naturally adept at and bog down in the one they’re weakest at. If you’re comfortable saying goodbye, you might knock that off quickly and move on to the next challenge; but if you’re conflict averse and don’t like to disappoint people, you might remain in a situation that’s toxic far longer than you should. The same applies to the messy middle: Some people thrive in chaos; others are paralyzed by it. As for new beginnings, some people embrace the novelty; others dread it—they like things the way they were.”