Rolling eyes, moaning, resistance - use your companions for organizational change in consulting and personnel management! Often understand and address unconscious defense mechanisms and unlock potential. Because defense mechanisms are automated, unconscious solution strategies. They protect the psyche from fear and excessive demands and keep it in balance. The more dangerous the outside world feels, the more present and important resistance and defense become. The increasing speed of change processes and transformations demand a lot from employees and managers. After a theoretical reflection, Anna Mucha and Eckhard Rauchhaus show the practical importance of individual and collective defense mechanisms in organizations based on key situations from HR work and consulting. Readers learn to understand resistance as a resource that they can constructively address and use.