If there's one thing that entrepreneurs have in common, it's their innate ability for salesmanship. Take, for example, Janet Kraus, who, at the age of 7, loaded vegetables from her family's garden into a wagon to sell to neighbors - attaching her mom's ratataouille recipe for good measure. Or James Currier, who knew where to find the best fishing worms in his New Hampshire hometown. At the age of six, he was digging them up to sell to visiting fishermen.
CNBC.com's special report on Global Entrepreneurship, writer Dinah Brin reports on why these people, among others, started not one, not two, but three or more businesses, and what it takes to be a serial entrepreneur. (Nerves of steel is high on her list of attributes.)