Well-being is an unchanging quest, and the level of the economy, as an important indicator of the ability of people to meet their own material needs, is a major factor in determining the well-being of the people. According to the latest studies by Maththew A. Killingsworth, Daniel Kahneman (a Nobel Prize for Economics in 2002) and Barbara Mellers, University of Pennsylvania, the United States, income gains can be made more happi. Among the more happiers, happiness can increase steadily as inc...