One of the great LIES of life is follow your passions
Mark Cuban grew up working class in Pittsburgh. His father installed upholstery in cars and his mom worked a myriad of odd jobs. Today, Cuban is worth more than $3 billion, owns the Dallas Mavericks and is a star on ABC's hit reality television show, "Shark Tank."
He chased any number of random side-hustles on his way to the top, including selling baseball cards, stamps and coins. One thing Cuban did not do? Follow his passion.
Cuban says that's bad advice because you may not excel at what you are passionate about.