1 you should be disciplined
2 should have good intellectual attributes
3 should have the mental fortitude for trading
Well this is my opinion I'm open for any corrections you may have
You reveal important points that the majority of traders already know, but not all traders can understand these three points or three principles. And actually these three points are connected to each other. Like being disciplined, you actually also need patience or fortitude or you could say emotional or psychological control in trading. Because it is impossible for someone to be disciplined in trading if he does not have proper control in managing emotions in trading itself. And actually being able to control our emotions is also related to our insight and skills in making the analysis itself. Whether technically, sentimentally or fundamentally. Because usually those who lose control in trading are those who don't know what they are doing. They speculate more without careful analysis and just follow trends without knowing why the trend occurs. Usually they are people who panic easily and suffer a lot of losses. We can take steps calmly in trading and maintain our mentality well because we know what we are doing. For example, if we know positive important news that will occur tomorrow which will have a big impact on the market (market sentiment is concluded after a fundamental approach) then we will be able to calmly hold a coin that will be most affected by this important news. Although usually before there is a spike there will always be a quick correction which can make weak people or people who don't know the information come out. And after that, the market moves up and makes people who had left panic and come back in when the price is high.
And one additional point from me that a trader must have is relationships. We must have relationships with many other traders who of course we trust and share information so that we can get information faster than some of the news media out there. Because if we enter when the news has spread then we have lost one step. Well at least this is my opinion.