I am fail to manage my friendship with many friend...Why did that happen?Is it my problem?

I think it is.But...what is my problem?I am trying very hard to smile everyday but seem like I am torture myself...Maybe truth is better keep in one's heart.What I say to my friend is through my heart,and I am trying my best to bear if my friend is getting some small mistake and I am going to point out their mistake for them and wan them to correct it.That is for them,if I didn't make u as my true friend,why should I difficulted myself?Maybe the world is cruel,not many friend will appreciate this kind of friendship but will "appreciate" some fake friendship.There is no perfert person in this world,everyone include me will do mistake,if I had done any mistake,please tell me if u are my real friend but not "fake" friend.Since I was true to u,I have already make u as my best friend,please dun hurt me.I am a very confident guy,I am sure u will regret one day later if u didn't appreciate our friendship that I have already make u as my true friend.Thus,I am also very revengeful,dun try to make me hurt me or u will very hard one day later,because I can revenge u even it is 10 or more years later.I am very angry about these friend,one day these friend will regret what they do on me!However,I will also repay kindness of everyone.They will always in my heart.
I am now try to learn something new,I believe that one day later I will master every technique I wan and show my real power.Haha...seem like tis a bit 自大,but that is my target and I have very confident with myself.Please forgive me if u think I am自大but not confident.Thanks to god,offer me this confident.