When self is neither the waking entity (ego) nor 'I' than 'WHO AM 'I'? Inquiry will not yield the full truth because it yields only fallacy of the form, not time and space.
When one realizes the self is not ‘I’ but the self is the formless substance and the witness of the ‘I’, he is freed from the attachment to results and then whatever he does it detached work. Similarly, when he recognizes that consciousness is everywhere and in everything in all the three states than that very recognition leads to a total dissolution of the ignorance and leads to nondual self-awareness.
What is the use of WHO AM I? , inquiry when ‘I’ itself is an illusion. --FORMLESS PATH