The paper presents a large-scale scientific and practical project “Finding the resources for psychological well-being enhancement of adolescents in Russia, Ukraine and Kyrgyzstan”, carried out by an international team of psychologists in Russia, Netherlands, Finland, Ukraine and Kyrgyzstan. The authors describe studies conducted in the framework of this project, methods used for identifying the psychological well-being of children , and the proposed and partially tested psychotherapeutic means for its improvement.