1/ Probably an unpopular opinion but I think trading psychology is overall useless and reading Trading in the zone 10 times in a row doesn't make any actual improvement to your trading. https://twitter.com/abetrade/status/1353747606325882880
2/ I did my fair share of studying this years ago and sitting in the corner of the room for 30 minutes meditating might make you less trash of person but not a better trader.
3/ If you really want to make it (and the reason why most bust/gives up) you have to watch this shit every day for months/years until you start to notice patterns or small edges that turn odds to your side.
4/ Most people buy courses thinking that they finish the thing and in one month they are ready to go. The truth is that it's pretty much a never-ending journey of observing/learning new things about markets you decide to trade.
5/ Second thing why people blow out is lack of money. Everyone wants to turn 1k into millions because they have seen some retard faking results from MT4 and think it's possible. Honestly, if you want to sustain a normal 1-2% risk, any account below 5 figures is waste of your time
6/ Anything you want to trade with you need to have at least the same amount saved. This will prevent you from doing stupid shit a being too emotional with your money.
7/ If you still think that you have problems with "trading" psychology, after all, try to have a proper sleeping schedule, not eat like absolute garbage, and exercise regularly. It's all you need to feel in a good state really.
8/ TLDR: you don't have a problem with trading psychology you just don't know what you are doing or risking too much money. Also try to live a healthy lifestyle with good food, sleep, and exercise, it helps.