This is an interesting survey of half a million Americans, according to Yahoo News:

People’s emotional well-being — happiness — increases along with their income up to about $75,000, researchers report in Tuesday’s edition of Proceedings of the National Academy of Sciences.

For folks making less than that, said Angus Deaton, an economist at the Center for Health and Wellbeing at Princeton University, “Stuff is so in your face it’s hard to be happy. It interferes with your enjoyment.”

Happiness got better as income rose but the effect leveled out at $75,000, Deaton said. “Giving people more income beyond 75K is not going to do much for their daily mood … but it is going to make them feel they have a better life.”

In a temporal sense, I believe it.