Don’t blindly stick to your models of understanding the market or the world. Acknowledge that things will go out of script. Equip yourself to react well when these events occur instead of rationalizing them to death.
I'm increasingly thinking that every functioning system has two forms: The abstraction that outsiders are led to believe, and the reality that insiders actually and carefully operate.
You don't incrementally learn a system. You eventually unlearn its necessary lies.