When new traders begin trading they are always introduced to profitable businesses because those who introduce them always promise abundant profits, but that is a big mistake. Because we know that our opportunity in this business is 50:50, so we are ready to make money or lose money with the same nominal, we hope that a profit of 50$ means we must also be prepared to lose 50$, so we need to know what is RISK first. Therefore we know how many lots we have to use for each OP, and what our capital strength is with the lot we want.