Found this interesting article why traders lose monies in the stockmarket.
https://www.tradeciety.com/24-statistics-why-most-traders-lose-money/
https://www.tradeciety.com/24-statistics-why-most-traders-lose-money/
Now, I do not agree 100% with all that they have noted on why traders lose. One big reason I believe is the "herd" mentality. If others believe as I do, then, it must be the correct decision. Go to this website, www.stocktwits.com. I have signed up for it because it gives you insight to what majority of retail traders are thinking. Most times, a stock they have a trade or investment on, goes down in value. What do 90% of them do? I will buy more! If this was a bargain at $80, it must be an even bargain at $60. So, it goes down to $35 and they say, can you believe how much of a bargain this is? It was a gift at $60 and even more so at $35 so, I will buy more! If you are one of these traders, do yourself a favor and don't do it!
Track your trading results with as much intensity as you track a stock. Study it. Tweak your approach based on what you see. Be the 1%. Only a delusional trader will continue to do things that lose money when the results are staring him in the face.
There was an article yesterday on Apple stock and the investors who held onto their shares since, 2006 I believe and they said the returns were like $1,000 invested would have returned $9,000 plus. The point being diversification which was one of the items mentioned is not really a good thing. Even Warren Buffett made a remark against diversification making your results be mediocre. Mutual funds also, lose monies! A lot of them do so, the diversification argument probably, does not hold too much water!