I couldnt disagree a trader must have a trading system,money and a good mindset,most of the new traders are lacking with these factors thats why they couldnt achieve success.
a trading system is good because it could take away the emotional side of trading. a cool trader who is just following his trading system strictly without emotions is better and stress-free compared to a trader that have no system at all and just randomly trades at will.
We should be wise and always follow the system we are using, if the system is not working anymore then we have to improve it.
It's a long term journey, you keep improving your strategy as the trend does not always happen all the time, the market is changing so as a trader
you should know how to change for improvement.
In some cases, this statement that trading is an unpredictable job holds true. However, there are certain situations when you cant say this thing that this statement holds true.
Most of time, it is your skillset and experience which helps you in making wise decisions and that too at tough times. You need to study a lot in order to make some handsome amount of profit by doing trading.