How do i get serious revenge on my brother?

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He is the reason why my family is poor.
He is the reason why my mom is in hospital
he is the reason why my dad is stressed and nearly collapsing.
He hits me, im a 15yr old girl and he is 18.
He treats me like a slave and i am always home alone with him.

I want to kill him. he makes me want to suicide.
He has no car so no car revenge stuff.
He is obsessed with facebook and sports.
I want him to feel the pain that i've felt. i want him to cry.