Bet on black. Buy low-debt or no-debt companies. When the economy is in trouble, these companies usually have enough cash on hand to stay out of trouble. And they seldom need to borrow when interest rates are high.

The higher the yield, the higher the risk. A high yield is designed to attract investors. An outrageously high yield attracts fools.

Give a cold shoulder to cold callers. Never invest in anything based on a phone call from someone you don't know or whose office is a post office box.

Invest in vanity. Buy stocks in high-profile companies whose products are designed to make you feel good and look good.

Have the courage of your own convictions and don't be swayed by friends who boast about their financial home runs. Last year's winners are often this year's losers.

Never call your broker on Monday. Out of courtesy and common sense, wait until Tuesday. A good broker is focused on the opening of the market - at home and around the world - and on getting back into a business frame of mind after the weekend.

Sell before the holidays. Stock prices tend to rise on the last trading day before major holidays.