This book elaborates a framework of Leadership based on Positive Psychology, a particular research field of psychology which emphasises the optimal human functioning. By understanding and embracing the components of Positive Psychology, great Leaders maximise their effectiveness on the one hand and aspiring Leaders enhance their learning curve on the other. The purpose of this book is to provide a widely spread contextual understanding of the new perspective of Positive Psychology in combination with Leadership and Leadership Development. Furthermore, the intention is to examine hypotheses based on theory by means of expert interviews. The data is collected from a spectrum of interviewees ranging from Managing directors through Human Resource Specialists to Leadership Coaches in the Consumer Goods industry in Switzerland. The creation of a Leadership Development model in the last part of the book is a truly new way of bringing Young Professionals to the next level. This book supports prospective Leaders to grow and provides them a clear direction. Moreover, the entire information is uniquely nourished by practical hints of Professionals. Thus, this book is also highly valuable for Mentors, Coaches and HRD responsibles.