Many studies on happiness show a similar result even though study periods, objects, and methods vary.
The result says that happiness that is achieved by obtaining materials sustains only until the point where you do not need to worry about feeding yourself anymore. Once your survival is guaranteed, the happiness you felt in the beginning disappears and the level of happiness plateaus though your income increases. This explains how people in countries of low national income can have a higher level of happiness.
It is not easy to define happiness as people have all different standards of happiness. However, happy people have something in common: They are confident, have a clear goal in life, and make efforts to live a meaningful life day after day.
The Elohists, who have received God Elohim, always say they are happy. Their conviction about God’s salvation makes their faces full of confidence and smile. They have no hesitation in doing something because they know what they should live for, and they live a meaningful life by delivering the news of salvation to people of the world. So Elohists are happy every day.