The growth of a nation today is focused on sustainable development to keep the balance of present needs versus future expectations. Sustainability revolves around achieving economic growth while improving social equality and the standard of living. Human Capital development is the main force behind economic strategies around the globe for achieving sustainability goals. While the focus is on education, healthcare, skill development, workforce policies, etc for the development of human capital, the primary need is to evolve the cognizance of the human mind to its maximum potential and in turn, help them to deliver its best for high productivity. The power of the human mind can thus improve the power of economic growth. This paper is an attempt to review Tamil literature to understand how the power of thoughts can improve the quality of life and standard of living of humans which accelerates the economic growth of any nation.