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Are you feeling stuck in trading due to your strategy? The person you are thinking their strategy is working, may have a strategy that is not sustainable. While it is important to be able to unlearn and learn something you should be able to understand also sometimes that your strategy is not working because you have not gone deep enough in the mastery of it.
I think this is the common mistakes of traders who are just starting. Just like after a few trades, and those few trades started to lose, then some of them can't accept the fact that there is really something wrong with what they are doing, and some of them can't adapt to change.
There's a lot of room for imporovement in trading.