1. Never be the first to buy or the last to sell. 2. Sell the history, buy the mystery. 3.You'll never go broke taking a profit, even just 10%. 4. Don't fight the tape. 5. The market is always RIGHT. 6. Never, EVER let a gain turn into a loss. 7. If you're making money , don't worry, pay the tax. 8. Whenever possible, take a market order. Don't be an Eighter-Wannbe trader/investor. 9. Rumors are just that. 10. Have a plan. Any moron can buy a stock, but not too many know when or why to sell.