I don't really agree with this breakdown at all. Mental game is important as it is in any performance activity, but it's the last ingredient to be added. "Psych" is to wannabe traders what "evil spirits" are to primitive peoples, or "systemic racism" is to the woke - a nebulous concept invoked to avoid grappling with the real reasons that one's ES daytrading 'system' can't hold a positive equity curve.
Ok. What are the real reasons one's daytrading 'system' can't hold a positive equity curve? If I give someone a positive expectancy system and they fail at it, what else can there be, then their way of thinking?
I am in AB's price action trade room. There is no promise of anyone becoming anything but what one is able to become. However, learning to use tools i.e. charts properly can be taught. Not everyone can receive but say that something is not possible is partially true. Just like the guru can tell you the way but only those who ARE READY, can receive will follow the righteous path. Otherwise I do agree, Amen brother.
Sure, that can be a possibility. But is very unlikely that one used it and make money and the other one use it and don't make money with it at the same time, that it is the system. What I find usually with people is that they have difficulty to follow the rules, even if they made them. All sort of things come up. Boredom, second guessing, fear of another loss, greed and so on. If we address where that comes from, it is all in the mind.
Lack of discipline is a general word. Why there is a lack of discipline can be of several reason. Those reason can be addressed if you know the underlying problem.
Lack of disciple is a general term but if I was to tell you a trader failed because of lack of discipline you would probably have a good idea why he failed. If I said he failed because of " Boredom, second guessing, fear of another loss, greed and so on.". you might not be able to fathom the reason. I could be bored silly, which I usually am when trading, and still have the discipline to follow my plan.