Who Am I meditation is allowing the mind to drop and settled in the inner being  like a falling leaf of a tall tree. It is like observing the full moon in a silent lake, where there is no ripple,

You are the ultimate freedom, peace and bliss - free from the trace of desire, fear and doubts.

Who am I? I am that. Nothing can change that. Words, intellect and concepts can never reach that. It is the perfect silence without vibration.