The author is a former HR manager, currently a coach and career consultant who helps people in their professional identification and development. Many requests from clients on the topic of impostor syndrome prompted the writing of this material, where the topic of uncertainty, self-esteem and self-worth is revealed in simple language, and specific techniques and exercises are described. The book will be useful for those who experience fear of failure, constant doubts, uncertainty, perfectionism, overload themselves with work or, on the contrary, avoid it, criticize themselves excessively, believe that everything they have achieved is an accident, and even have nothing to do with impostor syndrome, because that he is not a real impostor.