For those who weren't born rich, becoming rich is an endurance sport. It takes extreme motivation and effort (though not necessarily a lot of smarts). If I go to the financial district and spend the day there, I will see bankers, executives, and others running laps around the park at lunch time, or spending an hour or two in the gym after a day of work. These guys typically spend 10 to 12 hours a day in the office, in busy firms they may work 6 days a week, those who are hungry might take only two days off per month.
I was formerly one of those 6-days-a-week, 12-hours-a-day people, and I began cycling to maintain my health and sanity. The more I worked, the more I needed to ride. I would get in 90 minutes before work every morning, and 3 to 5 hours per day on my day off. If you have enough discipline to push your body in endurance sports, you probably have what you need to become rich, and vice-versa.