If you ask investor Kevin O'Leary, it's never too early to start teaching your children about money. In fact, the O'Shares ETFs chairman and "Money Court" judge believes that by the age of six, parents should already be talking to their kids about finances.

"Having discussions about money and how it's made at the dinner table is really, really important," O'Leary tells CNBC Make It. "The concept of money saving and how the world works is something even a child can grasp at an early age."