How do you deal with extreme bitterness and hatred of others due to being bullied by others past or present?

I short circuit. I get paranoid of pretty much everyone. I become so bitter and hatred towards prettt much eevwryone. I feel I’ve ruined my character. Whatever I used to have. Im very easily hurt and it all built up.

How do you deal with extreme bitterness and hatred of others due to being bullied by others past or present?
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