The world of work is changing. This demands a lot from today's employees: for example, more initiative, flexibility, willingness to learn, and independent career development. Competent and holistic guides for career transition processes are needed here. The book conveys the fundamental know-how of career counseling. In particular, the Zurich-Mainz career counseling model (ZML) is presented as a comprehensive and holistic approach to counseling. It combines psychological counseling principles with career expertise and specific tools. The method set includes diagnostic tests, self-reflection methods, creativity techniques, visualizations, analog media, role-playing, fantasy journeys, as well as language and interpretation skills. Many methods are illustrated through case studies. Innovative approaches such as design thinking and storytelling are also included.