Who identifies the body as I? Whom is talking to whom as one is thinking to oneself? In fact who is identifying thoughts as I? Isn't the answer to all of this just thought? Thought is the most transient one is able to perceive, but who or what perceives them? Continuously consider this, not with the mind but by looking beyond the mind and abiding there.
All of this is just a concept, eventually you have to leave concepts alone and abide as your true center which is your own Self [and the Self of every other Being].