Well, you are treading on deep philosophy here, so I will also take a dive.
To quote Fight Club
Originally posted by Tyler Durden
You are not your job. You're not how much money you have in the bank. You're not the car you drive. You're not the contents of your wallet. You're not your f**king khakis. You're the all-singing, all-dancing crap of the world.
You can say there are two yous, a physical one and a conscious one. If we could somehow port consciousness from our body, would we be the same? That is a question we don't have an answer to. But we feel the thoughts to be separate from the body.
Even consciously, there is not one you. You are someone else to your family, someone else to your friends, someone else to strangers, and finally there is a side of you known only to you. We construct different persona as according to our belief of how we should be behaving. Everything about our life is a narrative constructed by our self. We create an image of our self in our mind. Nobody remembers every moment of their life perfectly, so we keep on editing the memories to fit our narration. That is us in our mind. But that is also not the you. Even you don't know the real you.
So, there is no way to say what the real you is. It is derived from our brain, but unless we know how exactly the brain creates consciousness, everything is pure speculation. So, there is no right answer because every answer is possible.
So, the real question is why do we doubt who we are? Awesome isn't it, consciousness trying to observe itself and trying to make a sense of it. These things really are mind boggling.