Never get into the market because you are anxious because of waiting. Avoid getting in or out of the market too often. Losses make the trader studious - not profits. Take advantage of every loss to improve your knowledge of market action. The most difficult task in speculation is not prediction but self-control.
Successful trading is difficult and frustrating.
You are the most important element in the equation for success. Always discipline yourself by following a pre-determined set of rules. Remember that a bear market will give back in one month what a bull market has taken three months to build. Don't ever allow a big winning trade to turn into a loser. You must have a program, you must know your program, and you must follow your program.