Dr. it is normal unfortunately- IMO- 90% of traders lose money. Case and point here, anyone selling an undervalued growth stock with a strong uptrend chart during a bull market. Really? hehe.
-but this gives opportunity to the smarter, winning 10% so IMO its OK by me.
if folks want to win at investing/trading, its simple - emulate what the regularly winning traders are doing, and don't try to re-invent the wheel. E.G, Are they buying / holding? If yes, you do same.
its not rocket science :D JMO.