How do I stop my emotions from controlling my trades?

Every trader who has ever lived has fought this. Money moving in real time hits something ancient in us, fear and greed that predate any market. So do not treat this as a personal defect. You are feeling exactly what the human mind was built to feel when gain and loss are on the line. The goal is not to stop feeling. That is impossible, and traders who claim it usually just went numb. The goal is to keep the feeling from becoming the decision. You do that by putting rules between the emotion and the action: what you will risk, when you will exit, decided before the heat, so the plan trades and not the fear. Start with one rule you write down before the market opens and follow no matter what you feel. Just one. When the urge to break it rises, that urge is the exact thing you are training against. Each time you follow the rule instead of the feeling, you get a little more free. Control is not a switch. It is a habit built one honored rule at a time.