The monograph is devoted to a special form of personality development - self-development. The experience of studying self-development as an object of interdisciplinary knowledge in philosophy, synergetics, pedagogy is presented. The work shows the formation of the psychology of self-development, distinguishes various theoretical approaches to the consideration of self-development in the framework of domestic and foreign psychological science. The heuristic potential of the subject approach is demonstrated, on the basis of which the author developed an original theoretical concept of personality self-development