The speculator’s chief enemies are always boring from within. It is inseparable from human nature to hope and to fear. In speculation when the market goes against you, you hope that every day will be the last day — and you lose more than you should had you not listened to hope — to the same ally that is so potent a success-bringer to empire builders and pioneers, big and little. And when the market goes your way you become fearful that the next day will take away your profit, and you get out — to soon. Fear keeps you from making as much money as you ought to. The successful trader has to fight these two deep-seated instincts. He has to reverse what you might call his natural impulses. Instead of hoping he must fear; instead of fearing he must hope. He must fear that his loss may develop into a much bigger loss, and hope that his profit may become a big profit.

When you’re in a losing streak, your ability to properly assimilate and analyze information starts to become distorted because of the impairment of the confidence factor, which is a by-product of a losing streak. You have to work very hard to restore that confidence, and cutting back trading size helps achieve that goal.

When I get hurt in the market, I get the hell out. It doesn’t matter at all where the market is trading. I just get out, because I believe that once you’re hurt in the market, your decisions are going to be far less objective than they are when you’re doing well. If you stick around when the market is severely against you, sooner or later they are going to carry you out.

The key to trading success is emotional discipline. If intelligence were the key, there would be a lot more people making money trading… I know this will sound like a cliche, but the single most important reason that people lose money in the financial markets is that they don’t cut their losses short.”