"New teachers are needed in the country" - the slogans and bestseller titles indicate this: The success of schools depends heavily on teachers. The professional requirements for the teaching profession are extensive, heterogeneous, and contradictory. The high rates of burnout and early retirement alone do not explain this. Is it possible to assess whether one is up to the tasks? This book thoroughly outlines the personal suitability characteristics for the teaching profession. It then presents practical diagnostic materials that help to gradually develop the relevant competencies (e.g., in communication and self-management) during studies and in professional life (through self-exploration and assessment center procedures as well as training programs).