Dear OP all you have said is okay and not a bad idea, these Information you share actually are basics and I would love to add, Patience , it's a very key habit to put to consideration while trading but a whole lot of traders don't have it fir sure, even a discipline trader needs patience to execute their trades, needs it to stick to their trading plans and all other factors that would be needed to maintain a good and healthy trading system.
Management of emotions is another, I have known of people who have brilliant strategies, excellent trading plans and very effective risk management system with which they trade but still struggle with their emotions bringing everything to a zero sum struggle all over, if they are able to overcome emotions I believe even a beginner wouldn't be long before they will start trading like a pro.
When someone trades and they do not have patience of course there will be many losses that will be obtained from the trades they make because they cannot trade well, with patience in trading they will be able to know the right time to enter the market and also exit because someone could make a mistake in holding on while they have to release the assets they hold for the profits they have earned.
You are right even though someone has understood well the right strategy for trading but they still have not overcome emotions when trading then they still experience failure and for beginners of course must continue to train so that they can always overcome emotions when trading if they do not want the trades they make not in accordance with what is desired.