Do we all know that most of the real causes of losing in trading is because some traders have little or no knowledge on trading or what they are doing in the market, they just enter a trade blindly hoping it goes their way, and when it starts going against them they start praying.
I have seen someone shorting a trade because he felt that the market has bought for a very long time, and when he did that, he was liquidated of the $30 he used in that trade because he didn't even know how or where to set his stop loss, so trading blindly is one major factors that cause losing in the market this days because when you know what you are doing, even if the market is going against you, you wouldn't panic as long as you use an amount you are willing to lose.
You cannot trade on hope or trade with hope alone. Real traders possess real knowledge of the market and have invested a lot of their time studying the charts for observations. If you are a new trader in the market and think that you could just make trading decisions without any analysis or knowledge, your decision is just more of guesses, and they will most likely end wrongly and unprofitable for you.
If a group of friends all stat out to learn trading, not all of them will be successful at the end. and the reason is simple, because not all of them can remain dedicated to learning or even have the courage for practice of what they have learned.