No matter the number of videos you watch on this, you need to learn your psychology by Yourself! This is just a fact!
What other things can't be taught in trading?
Yes you have to learn the videos for real time trading.
Emotion too can not be thought including sentiments.
Further, discipline can not be thought. You get disciplined as you progress with especially losing of trades.

You would surely see the difference when you do try to compare the older you and the current one as you do gain up experience along the way.There are indeed things that cant really be taught by anybody or can be searched up online since this do particularly talks about inner self attraibutes.
Patience, discipline, emotion handling and more can really be only attained by just experiencing up things.The less you do engage into something then the lesser you would able to mold up yourself.
This is why we should really be trying our best to learn up along the way and gradually enhancing those attributes which are the main keys for you to be good into this kind of field.