The trader must know himself or herself to describe his or her trading plan or strategy. The trader must evaluate all of his or her personal characteristics to determine his trading style. If the developed strategy is unsuccessful, the investor must modify the parameters to adapt to the contemporary environment. Trade, make mistakes, analyze your mistakes and make adjustments to trade, once again trading. And so circle until you come to the trading system, which should manage most of the parameters, and trade yourself at this point will be more relaxed and confident, which is very important to trade