Luck... it has been written about for years. Today James tackles both sides... what is luck and why did this person ask this question?

Was Mark Cuban lucky? Who knows? But if you know the back story of Mark's rise to success you'll understand how much work went into his success.

When he made his first few million, he didn't quit. He leveraged his success and "got lucky" again.

And although he's a billionaire (a few times over), he still has not quit. Just tune into Shark Tank and you'll see why he has been so consistently "lucky."