Credit cards, Sept. 29 -- Billionaire Mark Cuban said that if you use your credit cards, you don't want to be rich. What did he mean by this?

He told Dave Ramsey at latter's show that the best place to invest is to pay off all your credit cards and burn them. If you're paying 15 per cent or 20 per cent in interest, if you pay that down, you just earned 15 per cent or 20 per cent.

Does this mean that we should avoid using credit card at all? For some, it is the best advice but perhaps not for all. As they say - "you can't put a square peg in a round holes" - the same way one piece of advice may work for some people, but not for everyone.

I. Avoid unnecessary expenses: At the outset, it is important to remember that no needless expenses ...