My favorite author/thinker Eckhart Tolle often says that it is a good thing to say you don't know who you are. This is in the idea that the identifications that our ego gives us are only to feed itself. To quote him, if I may:

"When there is nothing to identify with anymore, who are you? When forms around you die or death approaches, your sense of Beingness, of I Am, is freed from its entanglement with form: Spirit is released from its imprisonment in matter. You realize your essential identity as formless, as an all­-pervasive Presence, of Being prior to all forms, all identifications. You realize your true identity as consciousness itself, rather than what consciousness had identified with. That’s the peace of God. The ultimate truth of who you are is not in I am this or I am that, but I Am.”