Benzinga and Yahoo Finance LLC may earn commission or revenue on some items through the links below. "Shark Tank" investor and entrepreneur Robert Herjavec has heard more than 1,000 pitches during his time on the show, and he says people's biggest misunderstanding about starting a business is that they need a great idea. "The reality of it is ideas are cheap, execution is hard," he said on YouTube talk show "Hustle Meals." "You know, over 17 years, we've seen so many businesses...the ones that can make it ...