"Every athlete I talked to have said they perform better when they feel confident about how they look, so I really tried to do that, " said McCartney.

CNN: July 26, 2012 -- Updated 1350 GMT (2150 HKT)

Look, people ask me sort of how do I stay calm in my job.

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How does that look for the U.S.? I do not expect servicing costs to increase significantly: there are still plenty of buyers at treasury auctions and the Federal Reserve can always be forced to step in with Operation Twist or QE3.

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How did I convince these tech newbies that computers could really do something that could look smarter than suggesting you pass on the striped ties with the plaid pants?

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