Congratulations, Mr. Brown. After more than a decade in the shadow of Tony Blair you’ve finally got the job. This is a time of opportunity. But you face significant challenges that could threaten your position. Most of these have to do with your strengths and style, and how they differ from those of your predecessor. So, here is some advice that all managers experiencing major role shifts would do well to consider: the most important adaptive challenge you face is not changing the country, it’s transforming yourself. And it’s far from clear you will meet it.