The physical body? I am not; I am not the physical body.
The Five cognitive sense organ? I am not; I am not the sense organ.
The five vital breath or air? I am not; I am not the vital air.
The mind which think? I am not; I am not the mind.

If I am not one of these? Then who am I really?

After negating all the above, the consciousness or awareness which alone remains – that is what I am. That thing we call consciousness, it is the soul, the spirit.

Who am I? or Who you are?

You do not have a Soul. You are a Soul. And you have a body.