This article makes a contribution to awareness of how belonging to the LGBT+ community can influence the well-being of young people and promotes a better understanding of diversity in society. The research data reflected in this article demonstrates that people who are part of the LGBT+ community have a lower level of psychological well-being compared to people who are not part of the community. Also, they have lower scores on most scales that measure various domains of well-being, especially on the dimension "Self-acceptance", "Positive relationships", "Environmental control". In addition to this, the research also highlighted the fact that people who are not sure of their sexual and/or gender identity have a very low level of well-being, which may indicate a fear of being judged and not accepted.