Wishing on a Nonexistent Star

Someone Fucking kill me. I have pissed off people for far too long and its starting to make me wonder why I act so stupid and ruin everything. I pissed off at least two of my best gal pals today and I am trying not to lash out or worse, cry. I want to be someone who can make people happy, not pissed off. Someone, anyone, help free me from this pain. I am so dumb, I cant even keep the one group of friends I love, close to me. Just fucking shoot me. I want out of this. Not to die, but to get out of this misery. I want to be someone new. Someone who gives a fuck about how her friends see the world. But I can see that wont happen. Im just to damn stupid to even tell them sorry, because its a pathetic excuse to how I feel. I feel like I have hurt someone badly, and I just keep slipping up over and over. Can anyone tell me what exactly I am doing wrong in the first place. I want to understand. I dont care how life goes anymore, just hel me understand why life is a bitch to me. In the past year or so:
1.) My Parents got divorced
2.) One of my friends moved away
3.) One of my close family friends died
4.) I lost the one person I thought I could love for an eternity
5.) Another family friend died
6.) My dad is getting remarried
7.) My grades suck
8.) I fight every day with my mother
9.) I argue to harshly with my dad
10.) I piss off my best friend
11.) I cry my eyes out at the loss of a true love for months at a time
12.) I start to wonder: Why is my life hell?

Someone, anyone. Help set me free.