People want a constant profit when trading and then they feel euphoric, once the loss begins, then panic turns on like the comedown after the euphoria. Also, it's not that easy to unlearn what you have already learned, it's like, you know, the first impression is the last impression, so, if you learn bad at first, then it becomes very hard to fix that and "unlearn". I think you have to catch that moment when instead of learn, you understand by logical thinking and if you find something wrong, then it becomes easy to unlearn the past thing and comfortably move on a new one.
You touch an interesting topic, once a person learns something and that something they learned is wrong it is going to be very difficult for them to get rid of that knowledge, this is why it is so important that we watch very carefully what are we learning.
Many people learn how to trade or invest from YouTube videos that do not really want to teach you how to trade but instead want to get clicks and sell you something, so many newbie traders do not learn good habits when they trade and once they realize what they need it is too late and they have lost most of their capital already.