Pursuing happiness is one of major driving forces in life for human beings. How to aquire happiness is a big old question. Am I happy? Really happy? Can we be happier? People depend on each other by trading goods and services. Although most of us consider economic prosperity, or wealth accumulation is the key to happiness and welbeing, these two are not definitely related to each other. Exploring the nature of happiness would help us to find the ways to obtain sustainable genuine happiness for now and the future. The purpose of this paper is to discover how to promote the socio-economic happiness/subjective well-being for individuals from Buddhists’ point of view. First, we clearify the meaning of happiness by integrating the concepts of happiness both in philosophy and psychology, and Buddhadharma as well. Then, we use the happiness regression model to find out the factors of happiness for the public. In empirical study we use the data from the World Values Survey (Wave 6) for three countries, Taiwan, Netherlands, and India. The paper finds that we should explore the nature of “mind” and learn to generate genuine happiness by eliminate vexations. The key would be the right understanding of things, right attitude, and wholesome behavior, i.e. behaiving ourselves in accord with wisdom and compassion. The sustainable path for a happy economy is to follow an integrated way of living that makes our body, mind, and environment to remain homonious and flourishing by accumulate merits and Dharma wealth.