How billionaire tech investor Mark Cuban became the 'luckiest guy in the world'
His net worth is now estimated at $3 billion, and he has numerous mansions, private planes, and sports cars to his name.
He also owns the Dallas Mavericks, who brought the NBA championship home in 2011.
"I'm the luckiest guy in the world," Cuban said at Business Insider's IGNITION conference. "I only have to do what I want to do. I only have to do what I like to do."