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Martin SorrellChief executives of some of the world's biggest firms credit their to their upbringing.
Sir Martin Sorrell is the founder and chief executive of the world's largest advertising WPP. He says his father had to school at 13 and was particularly ambitious for his son after his other son - born a year before Sir Martin - died at birth.
And it was his dad's that persuaded Sir Martin to choose one firm as the path to growth, buying a in the British firm that initially made wire shopping baskets, and, via acquisitions, building it into a company now worth an estimated £16.4bn.
"He always said, ' a reputation in an industry that you . Then if you want to get involved in running a company that's already established, make it your life's work. Don't from opportunity to opportunity.'"
Sir Martin, now in his late 60s, says the hands approach he takes to running the firm, for example signing off on all senior employees who are hired, stems from his father's advice.
He warned him: "If you... withdraw yourself from the detail, you lose ."