A positive perspective in social sciences is one of the key directions in contemporary youth studies and an important point of reflection on education. In recent decades, the Positive Youth Development concept (PYD) has been a particularly clear and significant perspective for studying adolescence on a global scale. This perspective is crucial for many theoretical assumptions and educational projects. The aim of this article is to analyse the concepts and theories (directly and indirectly) related to this concept in youth studies. In this paper, significant changes in the reflection on adolescence have been analysed, which turned the vision of a developmental stage full of tensions and conflicts into a period of great opportunities for the personal development and also gave new meaning to youth’s good life. The PYD key concepts and theories plus practical education have been presented. Additionally, critical remarks on positive concepts in youth studies have been analysed.