The educational process in modern conditions requires not only a high level of professional knowledge and skills from teachers, but also the presence of a mature self - concept based on spiritual and value orientations. This issue becomes particularly relevant today as teachers are seen as agents of change who can influence the future of society. The article under review is devoted to the study of the role of spiritual and value orientations in the formation of a mature self - concept among teachers. In the context of modern social and cultural changes, special attention is paid to developing a harmonious and spiritually mature personality. The analysis of previous studies in this area revealed unresolved aspects, which have become the subject of the current research. The problem of spiritual and value orientations of teachers as a pathway to a mature self - concept is thoroughly explored. For the empirical study, a sample of 420 individuals was formed. These individuals were taking advanced training courses at the Central Institute of Postgraduate Education of the state higher education institution «University of Management of Education» of the National Academy of Sciences of Ukraine in Kyiv. The author's method «The Value of Self - сreation» was utilized in the research, aimed at studying the spiritual and valuable component of the teachers' self - concept. Additionally, the unconditional self - acceptance questionnaire by J. Chamberlain and D. Haaga (2001), adapted by O. Bondarchuk, N. Pinchuk, and O. Prokopenko, was used. The survey was conducted using Google forms. The study's results highlight the importance of spiritual and value orientations in developing a mature self - concept among teachers. The study also points to the need for further scientific exploration in this area to gain a more detailed understanding of the relationship between spiritual values and the professional activities of teachers.