Having just taken an IQ test out of curiosity, they strike me as testing very little beyond the ability to pattern recognise and extrapolate.

Having pattern recognised and extrapolated to my perception of the wealth-happiness curve, it seems that when your wants are met by your current wage, wanting more money is paradoxical -- it requires either time or stress that take away from the many other richnesses of life.

A little ambition (and savings) is good -- you can't recline too far back into the comfort zone -- but wealth never struck me as a particularly important measure of a person.