The idea of management and organisation that has been developed in the days of industrialisation fails in the light of dynamic social and technological developments. Positive Psychology and Systemic Thinking induce new concepts: leadership based on power, leading and developing organisational energy, using self-organisation. In daily leadership practice these concepts stand for excellent performance, job satisfaction and meaningfulness. The first part of this book describes the principles of the "revolution in leadership": The author presents management-related results, models and tools of Positive Psychology and explains the three principles of integrated work (meaning, power, impact). On this basis she creates a suitable image of leadership and develops the principles of Positive Leadership. The second part addresses the practical implementation of Positive Leadership in real-life leadership situations and refers in detail to the three central areas of Positive Leadership: self-management, employee management, management of organisations. For all three areas the reader is provided with theoretically substantiated and proven-in-practice management tools. Additionally, many case studies from the work of the author exemplify the amazing effect of Positive Leadership.