Greed is a bad human trait that causes bad effects too. Similarly, greed in the context of forex trading can cause losses or even margin calls. Why is that? Because if it is controlled by greed, traders tend to violate their own trading rules. As a normal human being, I think traders may not be able to completely eliminate their greed but can limit them. Try not to pay attention to charts too often or too long, or be tempted by screen shots of other traders' profit history. We can also limit ourselves how often we enter the market, after the target is reached, there is no need to open a trading platform.