how do they?

i used to say how selfish ppl can be...
now i realize i am too...
sometimes its so much better when we dunno anything...we wun did anything that will hurt others...
tmr is a new sem and i had to wake up so early...yet i am still wide awake here...
human being...
i have no idea how they are created at all...
yet each and everyone of them has their own special characteristic...
thus...causing people to form groups in a community...
i wonder how do they learn how to socialize with people from different ethnic and behaviors...

how do they learn how to make friends?
how do they learn what is love?
how do they learn to hate?
how do they know what is revenge?
how do they know when to let go and when to appreciate?
how do they choose between the two diverge road?
how do they realize their own mistakes?
how do they know when to take the initiative to thank and to apologize?

and if everything we did have never gone wrong and every decision we made have been a right one...will we be that happy with it? or will we fail to learn what does the word "satisfy" means?
often we mentioned how important can a person be in our life...yet...the saying that says- time cures almost everything is still true...

how do we actually leads a perfect life when nothing can be perfect???