The question of "What am I?" may lead to self-objectification or to self-liberation. Which path would you take? How would you answer it? By saying something along the lines of "I am this" or "I am that" or "I am such and such"? I hope not.
Understand the self-limiting meaning of the verb "to define:"
To define, according to OED, means:
'to specify; to end,' from O.Fr. defenir 'to end, terminate, determine,' and directly from L. definire 'to limit, determine, explain,' from de- 'completely' and finire 'to bound, limit,' from finis 'boundary, end.
Any self-definition is a self-limitation. To define yourself is to limit your understanding of yourself. To define yourself is to box yourself into this or that category. To define yourself is to finish your understanding of yourself. To define yourself is to end your curiosity about yourself.
A self-definition is not self-knowledge: it's self-delusion. You are not limited to any "this" or "that," certainly not until you are finished living. You are un-limited (by words or thoughts). Your suchness is beyond description or comparison.
A self-definition is self-objectification. But you are not the object of your consciousness, you are not a thought, "I am such and such." You are the subject that inquires, the one asking the question -- not the informational answer that passes through your mind.
Do ask yourself the question "What am I?" (to re-experience your ineffable essence) but ignore the answer.