I need help reducing paranoia.?

Hi my name is Dennis and I think your neighbour has the problem, simple answer is to move, I know sometimes it's difficult as I don't know your financial circumstances but if you feel harassed you can report this to your landlord or if privately owned the police, or try to get some legal advice I'm sure the Citizen Advice Bureau or a solicitor will be more than happy to give you what you need. No one has planted anything in your head, as you are under so much stress you must go and see your doctor who will be more than happy to give you medication to calm you down and help you sleep. I wish you all the best