How do you know which you is the real you that sounds like an odd question but just assume for a moment that you have the whole conflicting personalities thing like me i think theres three the crest of the wave the happy one the trough of the wave the one i hate and the calm water one the one i always want so how can you tell which one is the real one? i sure as hell can't maybe they all are even if some hate each other but thats not important the sky or the earth did i say three? my bad