It's a non-stop learning process you can't just read and watch and practice but you need to go deeper and experienced the actual trading to see how much adjustments you need to have a better chances of success, if you are into this business, you have to make sure that everything is really in your control, emotions and a good balance with your finances.
With those two characteristics, you are capable of developing more skills that will continue to help you to learn the deeper part of this business.
Do your DYOR and keep doing a good assessment inside you. It will help you in doing good judgments when deciding your position.
"do your dyor" is basically "do you do your own research"
dyor already means do your own research. Also I agree with you 100%, not only you need to master what trading is like, and learn the very depths of it. You also need to arrange something that is perfectly profitable just for you, every person has different needs and desires and wishes, so what you want from trading will be different from someone else and the teachings will be very different as well.
You need to craft your trading based on what you like, and based on what you prefer it will get shaped into something you like. You also can't stop learning since there are new stuff figured out every day, you need to keep up with the times, how people traded 30 years ago is vastly different then how they are doing it today, so you need to keep learning the new methods and calculations at all times.