Book excerpt: When you start a new job, you are in a “temporary state of incompetence,” faced with having to do the most when you know the least. Tom Neff and Jim Citrin, two of the world’s experts on leadership and career achievement, know what it takes to succeed in a new position. Through compelling, first-hand stories, from CEOs like Jeffrey Immelt of GE and Bob Eckert of Mattel, You’re in Charge—Now What? offers an eight-point plan to show you how to lay the groundwork for long-term momentum and great performance.