Magic Johnson has an estimated net worth of $1.6 billion.Jason Armond / Los Angeles Times via Getty ImagesMagic Johnson shared the tips he'd give anyone trying to build a business career.His advice: Lose the ego, spot gaps in the market, and learn from people who are smarter or more experienced."Why would I want to be over here with the millionaires when I can be over there with the super super billionaire?" he said.Magic Johnson knows a thing o…