This is the only life we get. Over six billion people on the planet, so many possibilities and perspectives, we will only experience one.
You are your own point on the compass, no matter how close you may get to another person.
This body is the only body you will ever have. Depending on how you relate to your body, how comfortable you feel within it, you may feel like it's an extension of your inner self, your personality made flesh, or you may feel like "The Ghost in the Shell".
People mature, are marked or nourished by experience, but the mental traits are the same. The blueprint cannot be altered.
Being you is mandatory.