This article explores how happiness acts as a source of transformation in the life of the human being through a reflective, deep and transcendental analysis. The aim of the study is to describe and analyze how the subjective interpretation of events can improve people’s physical, emotional and social health. It focuses on the idea that happiness does not depend on the events themselves, but on how we deal with them. An optimistic and reflective response allows us to understand the lessons of each experience and how these lead to learning and personal transformation, highlighting the importance of subjectivity in human experience. This approach is supported by various philosophical, psychological and cultural arguments, which support the notion that happiness is subjective and contextual. It details how personal perception plays a fundamental role in the construction of happiness.