Being an entrepreneur is one of the few fields where your ingenious mind and relentless motivation will always pay off. I haven't met one true entrepreneur that hasn't built something really friggen' cool and had a burning passion that fueled that fire.
Well said, ericmsimons! Pavel commented earlier that "hard work and working up the corporate ladder to some executive position at some big company [will get you rich]"... but most of us were frustrated by or left the corporate world --- or never joined it in the first place --- because hard work doesn't make you rich. Sucking up to the right person does. And, damn, there's gotta be a better way to get rich than fake-laughing three times a day with your boss. :) That 'better way' is working for yourself. If you can be happy along the way, all the better!