The Heisenberg principle - If something is closely observed, the odds are it is going to be altered in the process. The more a price pattern is observed by speculators the more prone you have false signals; the more the market is a product of nonspeculative activity, the greater the significance of technical breakout

If you personalize losses, you can't trade.

The first rule of trading - there are probably many first rules - is don't get caught in a situation in which you can lose a great deal of money for reasons you don't understand.

Whenever I enter a position, I have a predetermined stop. That is the only way I can sleep. I know where I'm getting out before I get in. The position size on a trade is determined by the stop, and the stop is determined on a technical basis... I never think about [stop vulnerability], because the point about a technical barrier - and I've studied the technical aspects of the market for a long time - is that the market shouldn't go there if you are right.

Michael [Marcus] taught me one thing that was incredibly important... He taught me that you could make a million dollars. He showed me that if you applied yourself, great things could happen. It is very easy to miss the point that you really can do it.

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. The emotional burden of trading is substantial; on any given day, I could lose millions of dollars. If you personalize these losses, you can’t trade.