Myself and a few others I have spoken with have noticed a "level up" effect. That is, you grind away at this stuff and one day you suddenly notice that you are noticing and applying the lessons much more effortlessly than before. It feels awesome and is worth striving for.
Yes, it does feel awesome. This discontinuity of the effort -> outcome map ([almost] nothing... nothing... nothing... jump!) to me is an instance of the Hegelian/Marxian quantity->quality conversion, something that jumps at me again and again in different contexts. I wonder if there is a way to formalize it.
Related to: What Do We Mean By "Rationality?"
Rationality has many facets, both relatively simple and quite complex. As a result, it can often be hard to determine what aspects of rationality you should or shouldn't stress.
An extremely basic and abstract model of how rationality works might look a little something like this: