The mentality must be connected our positive way with the reason, we should not discard the negative things, because they are events that can happen in seconds, I think the good player must be very precise in his objectives and that his mentality does not incur unwanted feelings , such as entering greed, if I am winning I must control myself to leave at the right time, to handle emotion is what differentiates us from bots.
Our emotion could be our weakness so we should set it aside.
We have to work based on strategy and we have to stick with it, our emotion should not influence us since it might destroy our purpose in gambling.
Winning is hard, it requires a working strategy and therefore we have to properly implement the strategy to make it more effective.
Professional gamblers knows how to hide or control their emotion, we should think like one.