The book provides a review of the literature on theoretical and applied issues of cognitive psychotherapy, discusses general problems of diagnosis and treatment, and provides an analysis of the formation of the schema and its influence on behavior. The following main topics are covered in detail: the influence of schemas on the formation of personality disorders; beliefs and attitudes that characterize each of the disorders; the nature of the patient's relationship with the psychotherapist; reconstruction, modification and reinterpretation of diagrams. The presented clinical material details the features of individual treatment for each type of personality disorder. Brief descriptions of cases from clinical practice are provided as illustrations. The book is addressed both to specialists adhering to the cognitive-behaviourist tradition, and to all psychotherapists seeking to expand their knowledge and learn new methods of working with personality disorders.