The science of positive psychology operates on three different levels – the subjective level, the individual level and the group level.“Positive Psychology is the scientific study of human flourishing, and an applied approach to optimal functioning. It has also been defined as the study of the strengths and virtues that enable individuals, communities, and organisations to thrive.” Source: Positive Psychology InstituteThere are many potential benefits of practicing positive psychology including an increase in self-esteem, improved relationships, and a greater outlook on life. Research in the realm of positive psychology has found that gratitude, Social connection, and kindness are all important to living our best lives.