This is a big mistake; there is no logical reason to be less likely to take risks after a winning trade or more dare to avoid risk after a losing trade, because your previous trade did not determine your next trading result. It is also an emotion to get the best out of you; it has nothing to do with logic or reality, because in reality you are no more likely to lose on your next trade simply because the last you are a loser. Errors are a common word for a merchant. Many mistakes a trader's condition. Example - Minimum investment, maximum trading volume and not implementing money management, Many lots of open trade.