What advice would you give the novice trader?
First, I would say that risk management is the most important thing to be well understood. Undertrade, undertrade, undertrade is my second piece of advice. Whatever you think your position ought to be, cut it at least in half. My experience with novice traders is that they trade three to five times too big. They are taking 5 to 10 percent risks on a trade when they should be taking 1 to 2 percent risks.
Besides overtrading, what other mistakes do novice traders typically make?
They personalize the market. A common mistake is to think of the market as a personal nemesis. The market, of course, is totally impersonal; it doesn’t care whether you make money or not. Whenever a trader says, “I wish,” or “I hope,” he is engaging in a destructive way of thinking because it takes attention away from the diagnostic process.
– Interview of Bruce Kovner in The Market Wizards.