What do you think I should do?

i live in the middle east my childhood was terrible, i used to fight with my family all the time, i stabbed 3 people before when i was 10 years old, 13 years old and 17 years old, I carry a bayonet with me when I go out and I think people are making fun of me, I suddenly want to stab the bayonet into their heart what do you think is my problem, I suffered a lot of violence at school when I was a kid and I was excluded.
What do you think I should do?
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