First, lets complicate the matter.. how do you define a mistake? Is a mistake a losing play? or is a mistake something that GTO doesn't predict? Or is a mistake a misread of an opponent? I can't say for sure..
But I can say that learning from your mistakes can be difficult on average and in poker it's especially so, because you sometimes get paid by those mistakes. Does it even stick out that you made one? I guess what makes learning from mistakes so difficult is figuring out when you've made on.
In general I find that tracking my hands and whenever I feel I've made bad play, to go over that hand a few times and see how I could have played it differently, works well in helping me become a better player.
Also I've recently started tracking tournament finishes and percentiles. That graph really opened my eyes to how much I was really losing/winning, and what stakes I should be playing.
When all said and done though, sometimes a bad outcome is just that.