If survey data are to be trusted, there’s a surprisingly weak relationship between money and happiness. As national incomes rise, happiness does not increase.
Consider this: happiness in the United States has been stable for the past 50 years, although at the same time living standards have doubled. The same holds true for the United Kingdom and Japan.
Ups and Downs
Money does make a difference to happiness in poorer countries though. If you don’t have enough for some degree of reasonable comfort, you can expect to be pretty stressed and unhappy.