Ever Wish You could dissapear?

Every Wish You could just dissapear from the world? I do right now. All i've heard all day is how i can't get my act together and do the simple things my parents ask me to. I"M SORRY THAT I"M A HUMAN BEING AND NOT A WELL OILED MACHINE! I AM FLAWED IT"S JUST A PART OF BEING A HUMAN BEING!!!! And sorry, i know some of these things are simple but i'm tired of hearing this same thing. And my friend got on to me today for being mean to her sister.... I WAS NOT MEAN i barely even TALK to her!!! I don't know what the heck i said! Apparently she's blocked me which i so don't get. And she got mad at me today and totally blew her top, she goes ":O Did i really just say all that?" `.`  I can't blame her sometimes but still... I'm just having a real bad day. And there are some days that i just think i shouldn't be living because every one just gets mad at me and just ug/ It seems like i'm always an annoyance to everyone.