Mark Cuban reveals major mistake with popular side hustles – and his rule to making sure it’s a ‘good’ one [Video]

BILLIONAIRE investor Mark Cuban has revealed the biggest handbrake preventing a side hustle from becoming a career is when people are making money for someone else and not themselves.

In an exclusive interview with The U.S. Sun, the Dallas Mavericks minority stakeholder and Shark Tank star said too many people approach a side hustle the wrong way.

He said many budding entrepreneurs were “getting confused” and thinking they could be successful by working for someone else rather than for themselves.

“All side hustles are good side hustles, as long as you’re not putting out money to somebody else,” Cuban told The U.S. Sun.

“I think people …