What should I do if I meet a sinister person?

I am such a sinister person as you say. I am shrewd and courageous, but I won't harm others if they don't mess with me, which is a bit ungrateful. I appreciate your help today. If you are wrong, I will kill you. I can't change this character. I can't control my personality. People who know me are afraid to get too close to me, because you provoke me. There are 100 ways to make his life hell, but girls will.