Why am I being downvoted for asking a question?
It's an important question to me since it can feel like you're completely blind on important and complex goals in life, unable to know for sure whether any of your actions are even helping.
And obviously we want to have more instrumental rationality...
Because other people don't find the question as-asked valuable.
You might like Raemon's Feedback-Loop First rationality.
This is all broadly covered in a lot of past posts, and also it's not super clear what you mean so it's hard to even answer.
For example, beating Baldi's Basics on the first try, without any prior knowledge of the game. It's a game widely known to be very difficult. What sort of mental tools could they use to do that?