To understand other and to be understand by other

I really dont get it how to understand people exactly and perfectly... But its harder even more to make people understand about me...
I though by trying and giving all I can give to understand other, it will make other also at least try to understand about me...
They said, they want to be accepted as what they are. But then when my turn comes, they just cant accept or try to understand me the way i am...
What are the prize I get? I got guilt on me, swearword, and all is just like MY FAULT ONLY...
while I feel that he/she also have done the same thing, i try to understand and its ok. but then.... They just like never think about it. I dont mean to be calculative here, but im also a human. I got limit, even though i've always try to push that limit further. I can say I'm start to worn out by this...

What did i do wrong until i must feel like this?? it is just not fair....