Van Tharp “When you understand what’s involved in winning, as do professional gamblers, you’ll tend to bet more during a winning streak and less during a losing streak. However, the average person does exactly the opposite: he or she bets more after a series of losses and less after a series of wins.”
Over the 18 years of trading the Futures/ Stocks and Currencies market, Van Tharp's books have help me immensely.
I suggest you read his books. Some of them are listed below;
Trade your way to financial freedom Super Trader Trading Beyond the Matrix Safe Strategies for financial markets Financial freedom through electronic day trading
I have a large collection of trading books. If anyone needs suggestions on great trading books i would be happy to send you a list :)