In the book “The Psychology of an Effective Manager. Flexibility. Effective management. Psychology of a manager. Book 2. Subject of Management” by Leonard Zawalkevich describes universal techniques and ways of overcoming difficulties in a simple and accessible form. Having understood the meaning of these techniques, you will learn to invert reality, turning obstacles into resources and tools for your success. This book is a faithful assistant for those who want to learn how to determine what their happiness lies in, accurately and competently choose a goal, make decisions, lead, motivate and control. The book is intended for managers, executives and simply for those readers who are interested in the growth of their own personality. The book “Subject of Management” continues the trilogy of books by Leonard Zawalkiewicz, which also includes the books “Management Situation” and “Management Process” .