Major change often takes a long time, especially in big organizations. Many forces can stall the process far short of the finish line: turnover of key change agents, sheer exhaustion on the part of leaders, bad luck. Under these circumstances, short-term wins are essential to keep momentum going, but the celebration of those wins can be lethal if urgency is lost. With complacency up, the forces of tradition can sweep back in with remarkable force and speed.

