Gross National Happiness, (GNH; Dzongkha: རྒྱལ་ཡོངས་དགའ་སྐྱིད་དཔལ་འཛོམས།) sometimes called Gross Domestic Happiness (GDH), is a philosophy that guides the government of Bhutan. It includes an index which is used to measure the collective happiness and well-being of a population. Gross National Happiness Index is instituted as the goal of the government of Bhutan in the Constitution of Bhutan, enacted on 18 July 2008.[1]