Who is who

Ok before anyone goes all troll and say "oh the title is too confusing", yes, i know it is confusing.  Kinda fits the theme here so deal with it.
Anyway so lately i've been considering alot of things, but mostly about who i am; and for that matter who are you.  Individuals are not really defined in a specific way other than how they are perceived by others.  Yes you're own opinion matters but when someone wants to know something about you they usually go to your friends so what do your friends really say? Just as beauty is in the eye of the beholder so is truth a matter of perspective.  A truth for one person may in fact not be the same to another.  Just as an example 2 people are stranded alone on a desert island.  No food and no other means of survival other than to eat each other.  To some this is seen as cannibalism.  To them it was their natural instincts kicking in and telling them they must survive.
So what is a truth? I guess a truth would have to be a fact.  Something that no matter who says it or how many times it is said it does not change.  For example saying that this note exists is a fact.  Saying the note is meaningful may be true to me but not to others therefore truth is unreliable.
So where does this all fit in with knowing oneself? Well is what we know about ourselves a fact? Or a truth? There are some things we know about ourselves which in fact are facts such as unavoidable behaviour usually caused by our natural instincts such as greed and there are aspects or our behaviour that we have been taught and have stuck with us therefore altering our individual personalities such as being sympathetic.
Even our own truths as to who we are is not only subject to change due to experiences but they are also a matter of perspective.  Therefore saying "i know myself better than you do" or "you don't know me" are both true and false.  Basically, humans are not aware of their own true nature and probably never will be.  We can only base what we are on the truths that surround us but instead we must forget the truths and think of the facts.  What are these facts? Well.....no idea.
Alright so that's my note of the week or month or.......year.......i really dunno if i'll continue these.  If anyone reads this leave a comment of your own opinion and also if you think i should make more like/comment saying you do and i'll make these more frequent.