Many people have an innate drive to achieve their personal best, to develop their abilities to the fullest. This drive, along with the pleasure of the game and the lure of money, propels traders to challenge the markets.

Good traders tend to be hardworking and shrewd people, open to new ideas. The goal of a good trader, paradoxically, is not to make money. His goal is to trade well. If he trades right, money follows almost as an afterthought. Successful traders keep honing their skills as they try to reach their personal best.

A professional trader from Texas invited me to his office and said: "If you sit across the table from me while I day-trade, you won't be able to tell whether I am $2,000 ahead or $2,000 behind on that day." He has risen to a level where winning does not elate him and losing does not deflate him. He is so focused on trading right and improving his skills that money no longer influences his emotions.

The trouble with self-fulfillment is that many people have self-destructive streaks. Accident-prone drivers keep destroying their cars, and self-destructive traders keep destroying their accounts. Markets offer vast opportunities for self-sabotage, as well as for self-fulfillment. Acting out your internal conflicts in the marketplace is a very expensive proposition.

Traders who are not at peace with themselves often try to fulfill their contradictory wishes in the markets. If you don't know where you are going, you'll wind up somewhere you never wanted to be.

—Alexander Elder