Power and influence are essential tools that enable managers and leaders to successfully enact their various roles and responsibilities. Your success as both a manager and leader will require you to skillfully utilize power and influence as you supervise, manage, and lead your organization’s most important resource—its people. While the astute use of power and influence will be essential as you enact your respective roles and responsibilities as a manager, it will be crucial as you provide the mission-critical leadership that will prepare and position your organization to achieve its present mission and goals as it strives to realize the future vision to which it aspires. The skillful use of power and influence will similarly determine both your professional success as an organizational leader and that of the organizational members that you directly or indirectly supervise and lead.