The competence of a manager results from the successful combination of technical, leadership, and organizational skills. The technical aspect is addressed early in one's personal development; the engagement with leadership and organization is reserved for practical experience. Here, the learning process is characterized by trial and error. Certainly: one learns through mistakes! But must they always be one's own? Blessed is he who benefits from the insights of others! This book aims to provide such an opportunity: it highlights weaknesses in everyday management practice and offers measures for their elimination. Examples and concrete suggestions strengthen the manager's resolve to implement the insights gained. Knowledge of management methods and tools, combined with practical experience, increases management efficiency.