Not really. Most of the time, hard work does not correlate with making lots of money. A single mother of four may work incredibly hard juggling multiple jobs on

Not really. Most of the time, hard work does not correlate with making lots of money. A single mother of four may work incredibly hard juggling multiple jobs on top of her family obligations, but she probably won't make a lot of money. In contrast, most rich people's income comes from investments, rather than salary.