Willing to work harder

While money is not he be-all and end-all of everything in life, wealth is an interesting indicator of many things.

In The Millionaire Next Door, Thomas Stanley and William Danko interviewed more than 500 self-made millionaires and surveyed more than 11,000. They asked them why they had been able to become millionaires when others not. 85 percent of them replied, "I didn't have a better education or more intelligence, but I was willing to work harder than anyone else."