Comment by PaulHoule

Marvin Minsky wrote forcefully [1] about this in The Society of Mind and went so far to say that trying to observe yourself (e.g. meditation) might be harmful.

Freud of course discovered a certain world of the unconscious but untrained [2] you would certainly struggle to explain how you know sentence S is grammatical and S' is not, or what it is you do when you walk.

If you did meditation or psychoanalysis or some other practice to understand yourself better it would take years.

[1] whether or not it is true.

[2] the "scientific" explanation you'd have if you're trained may or may not be true since it can't be used to program a computer to do it