I feel like I am going insane and I can't fit half of it in. I want to be happy but I can't possibly?

There is soo much stuff in my head that I can't think about how to sort things out I feel like it's 10x worse in my head than it actually is

I am obsessed with my looks, I'm not good enough and know no one will ever accept me or wanna be with me ever.

I feel like my friend makes everything be a competition and looks down on me constantly and when we got really close she knocked all my confidence down completely and I am literally so miserable I never have been so insecure in my life which lead me to being obsessed with my looks and constant putting myself down for the past 3 years and also makes me feel like my stories are so **** so I tell her nothing and complains I tell her nothing

When I tell my dad things he doesn't say much back it is like I irritate him with my problems and he doesn't want me to be there. If he is not moaning about a slightest mess I leave such as leaving my book in the kitchen he is half time alcoholic and binge drinks for about a week this happens very often. Different woman. My mums dead she was an alcoholic and drug addict (my dad doesn't take any drugs they were apart when she started taking)

My brother is heading on the same track as her as he drinks and takes coke and I don't know what else and threatened to kill me and got forgived like 5 minutes later by my dad and all his friends were down stairs and didn't give a ****. Also has a kid on the way

Failed school I'll be lucky if I get to stay on.

Got to lose a lot of weight

Secret sis