Book: Leaders At All Levels In this book, Ram Charan presents a radical and controversial remedy for the crisis in leadership; the Apprenticeship Model. This new approach to succession and to leadership development makes it a hands-on activity for leaders and their bosses. People with the talent for leadership get stiff challenges hand-picked for them. Their bosses play a crucial role in accelerating their development. HR gets a new job, as trustee of the Apprenticeship system. Leaders at all levels develop faster and better, and boards have better choices when it comes time to choose the next CEO.