The objective of this paper is to elucidate the condition of possibility for happiness that is founded in the post-modern world-view. According to Heidegger, the modern era that begins with the discovery of modern science presupposes the new world-view. And in the modern world-view, thinking of man is defined in a peculiar manner; this manner of thinking signifies the re-presentational thinking. Hence in the modern age, everything is re-presented by a subject, and these things are evaluated by the calculative thinking in terms of quantity. The concept of happiness is no exception. The happiness occupies an important position in modern life. And in the age of equality, happiness is expanded into everyone’s life. Yet the modern conception of happiness re-presented by a subject refers to the quantitatively evaluated happiness and this is defined as in-authentic happiness. What Heidegger pursues is not the happiness based on quantity; rather he seeks the qualitatively differentiated happiness. Heidegger, who criticizes the standardized happiness in the modern era, seeks to establish the qualitative happiness revealed in the post-modern world-view. The post-modern conception of happiness is founded in the meditative thinking distinguished from the calculative thinking, and the meditative thinking means the thinking whose foundation is located in the inherited autochthony.