Businesses need a new approach to the practice of leadership — and to leadership development. "Leadership is really not about leaders themselves," argues Joseph A. Raelin. "It’s about a collective practice among people who work together — accomplishing the choices we make together in our mutual work." Nelson Mandela was particularly adept at this new model of leadership, Raelin says. "One of the most important leadership lessons we might distill from Mandela was not his acquisition of leadership but the way he shared it."