Yes, indeed, but a study of the streams of thoughts and feelings that barge into our attention is more obviously fruitful to our improving our personal and collective well-beings. Learning how to discern negative/selfish/callous/viceous impulses from the positive/selfless/compassionate/virtuous ones is at the heart of the meaning of life and the purpose of our mind's abilities, as well as the human race's future.

I can't recommend Castaneda's work, but it does present interesting perspectives on intention and attention, even if I'm not sold that he was an honest or accurate or even well-intentioned narrator. That said, the character of Don Juan conveys much wisdom, but are the books allegorical fiction or fantastical non-ordinary-but-actual reality? I don't know yet, and maybe I never will.