In today's world almost everyone is only after more and more money hoping that it will make them happier. Increase in world population and per capita energy consumption in the name of development is causing all types of damages to the environment, wild life, plant life etc. Lot of development in the developed world has not made the people living there happier. Long term happiness cannot come from wealth and other possessions. Best example is that of Ambani brothers, who are not on talking terms despite having Rs 70,000 cr assets, due to money related dispute. Still people all over the world are following the western capitalist system blindly, which makes people more greedy. Hence firstly increase in world population has to be stopped followed by its reduction. Secondly there should be sustainable development without causing any harm to forests, other natural resources and wild life.