Book excerpt: This textbook is a concise guide to help current and future managers become better leaders. By virtue of their organizational position, managers have “position” power over some members of their organization. They can hire and fire, sanction a bonus or promotion, and assign both desirable and undesirable tasks. However, managers who are great leaders have an additional source of power that is not related to their official position within the organization. Great leaders influence people through “personal” power—their knowledge and behavior. The system of leadership communication introduced in this book is designed to increase your own personal power.