"Who are we, what are we?"
John Locke and Joseph Conrad debated the thought. Locke argued the brain would be the most important organ in the body because awareness, and we are the brain in material form. He also points out we are more than history and experience, we are a collection of characteristics.
Joseph Conrad would question about a ship pieces being removed to build a new ship, how much of the old ship would there need to be to consider it the old ship? Same could be applied to people how many same characteristics and traits would you need to make another you?
Terrance McMahon believes there is an algorithm to recreate yourself. You could mathematically assemble enough matter, characteristics, and traits to recreate another you. The math is not far out of the realm of reason, you could do it.
I subscribe that a "copy of you" and the "real you" would share same traits but almost immediately be two different people. Every moment you grow and learn and change as a result, so you would a different person from a day ago. The changes are choices, and the choice...
wouldn't a collection of characteristics or traits. That thing within that guides is the real you, some may call it a soul, or a spark, or a collapsed version of ego or the universe. You are more than your history, experience, or defining qualities of matter or ideals...
this thing you are, it's so powerful that it can place push purpose, change direction, and fall back allowing you to enjoy life. I don't have a word for it, but that's what we are.