To say that economic progress does not necessarily bring about a corresponding increase in happiness is to state the obvious. But the reasons for this are not so obvious. Whenever we experience agitation, frustration and disharmony, we tend to look for their causes outside of ourselves or in some instances we tend to even blame ourselves. In either case there is lack of objectivity.
Further, whenever we become un-happy, we spread our unhappiness to the environment and to others. The Buddha observed this phenomenon objectively. In the process he discovered a technique that brought peace and harmony to its practitioners. The technique, Vipassana, was based on truth as revealed to oneself and thus free from any dependence on others' imposition or biases. Because of its scientific nature, it appeals to many across countries for centuries after Buddha taught it.
Read more: http://articles.timesofindia.indiatimes.com/2008-01-09/holistic-living/27780481_1_vipassana-buddha-happiness