The idea that money can't buy happiness has been disproved by science, at least up to a point. Experts say that happiness does increase with wealth, but the correlation peaks at earning $75,000 per year.

"The lower a person's annual income falls below that benchmark, the unhappier he or she feels. But no matter how much more than $75,000 people make, they don't report any greater degree of happiness," Time reported in 2010, citing a study from Princeton University conducted by economist Angus Deaton and psychologist Daniel Kahneman.