2/27/2012

Arrogance can lead to major business mistakes, writes Marty Zwilling of Startup Professionals. For example, it's a mistake to assume that you don't need a business plan or to think that you don't need to pay attention to the market. "It's great to have a passion about a favorite new toy you invented, but just because you love it doesn’t mean the whole world will love it," he writes.

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