How to relax when there are sadistic evil people in your life?

[Never_give_up]

I know a guy that I would describe him as sociopathic sadistic criminal. He tried to bully me sometimes even showed me a hammer and I and my father called him on the phone and told him that we would go to the police if he bothers me again. He agreed and told us that he would stop bothering me. Some days ago after 6 months from the hammer incindent I saw him and he did a quick ironic laugh. That was enough to trigger a panic attack although I tried not to show it. 

I doubt I can go to the police or a district attorney and tell them that this criminal laughs ironicaly when I am near him, especially in my country that doesn't bother that much protecting citizens unless it's clear that very bad things have happened. Not only that but this question isn't a legal question, it's about how do I relax, it's like I have PTSD from him and from my past bullying experiences as a teenager. I try meditation but it doesn't seem like great solution in this instance. I am really scared of this criminal, I think about mma moves all the time just in case he tries something.

I live in a small town so I am definitely going to see him again some day and although I am planning to move abroad it will take years (I won't move abroad cause of him). We have talked to a police man and told us if he bothers me then I we should go to a district attorney and show them my diagnosis that I have mental problems like autism cause it helps with the situation if he ever tries to do anything. 

I have 2 appointments in 8 days with my psychologist and my psychiatrist and I am going to tell them, but till then I don't want to bother them. I told my mother and she told me that unless he does something worse then ignore him.

How do I relax? How not to let obssesive thoughts and PTSD  take over my mind. I understand this forum isn't about talking about these stuff so I understand if this question gets deleted but I hope it doesn't. What to do to cut these obssesive PTSD thoughts, how do i relax? Thanks in advance. 

[Monster Energy]

Sounds like your brain is stuck in a threat loop after what happened.

A guy laughing once isn’t really a new threat, I get why it still messes with you though after everything that happened before. Try not to go too deep into the thoughts when they show up, it just turns into more scenarios in your head. Also just because you feel scared doesn’t always mean you’re in danger right now, sometimes your body is just reacting to old stuff.