Based on a conception of the complexity of human development, this study aims to explore relationships and analyse the role of constructs whose scientific interest in understanding adjusted trajectories has been highlighted in current literature. Thus, the first objective of this research is to understand whether there are relationships between Emotional Intelligence, Satisfaction with Life (cognitive dimension of Subjective Well-Being) and Mental Health (levels of anxiety, depression and stress) in Emerging Adults. Secondly, the aim is to analyse the relationship between these constructs and the use of medication for anxiety and depression among Emerging Adults. The aim is also to study the relationship between gender and age and the above-mentioned variables.