Yes, I would add to that too. The "negative" won't go away with the positive if it is from traumas in the past. But it can be cleared so the "positive" can come in fully. I will give you an example of a trader I worked with who traded amazingly in the sim, but got so anxious with live money he couldn't do it. A fog would come over him. He'd be frozen. He'd take a trade, and sometimes as it went against him, he couldn't get out. He'd frozen. . couldn't react. And his 5 cent stop would go to 10, 20, 60 cents and he would be powerless. So we diged into this. What is going on? He had had an incredibly abusive father growing up, and not only hadn't he done any work to overcome the past, but he wasn't even aware how severe it was. He thought it was "normal". He worked with me for months on layer after layer of fog, pounding chest, dizziness, etc. Each layer he worked though lessened the symptoms and let him respond more appropriately in his trades. Stuff like this is very real and needs to be removed for the positive to come in. We are usually pretty powerless to it until we can find a way to clear it. My thoughts.
Mental state is a fundamental part of trading, it is timely decision making and self-control that will allow you to be successful in trading. In order to highlight the basic states, you need to build a small logical chain. The first is confidence, it can be achieved by constant work on yourself, in obtaining the necessary knowledge in this area, roughly speaking, you need to constantly learn. If you are confident in what you are doing, then you lose your fear, you become more aggressive in trading, and thanks to your knowledge, your aggression brings you profit. The second is stability and self-control, it's more personal and everyone calms himself and his nerves, there are many methods such as yoga or meditation that will help you to stabilize your physical and mental condition.