The article is devoted to elucidating the specifics of reflecting the peculiarities of the functioning of the concept of «happiness» in B. Antonenko-Davydovych’s prose with emphasis on its evolution. The creation of each writer provides an opportunity to reproduce his unique picture of the world, the components of which are concepts, their selection and generalization contributes to a more complete and objective understanding of the artist’s creation. The concepts are a kind of artistic embodiment of the writer’s worldview, the result of the interaction of individual and creative skills with the environment and temporal realities. B. Antonenko-Davydovych’s creation concentrates the personal experience of the writer, testifies to the uniqueness of his worldview, reveals the cultural and life experience, reflects his reception of the world. The concept of «happiness» is presented with different connotations in all periods of the writer’s work. The understanding of happiness by the characters in B. Antonenko-Davydovych’s works is evolving. Initially, the feeling of happiness correlates with memories of childhood, love for a woman, «related» work, gradually transforming into an adult conscious feeling of mutual love. The works of the writer testify to the gradual realization of true happiness. The story «Happiness» is significant for understanding the specifics of the functioning of the concept of «happiness» in the B. Antonenko-Davydovych’s creation. This is one of the last works of the writer, that was written at a fairly mature age, so the concept of «happiness» is presented here most fully, representing all its components, which in early work were outlined only in dotted lines. The work is supreme for understanding the concept of «happiness» by the writer. From the height of years and his life experience B. Antonenko-Davydovych proves that eternal ideals – love for a woman and love for people give a person a true feeling of happiness.