My neighbour is freaking me out!?

I used to think people were watching me all the time and following me. I don't know if I made it up in my mind or if it was really happening, but I just would always try to focus on what I was doing very intensely so I could block them out. If it becomes really serious, call the police, but the best would be if you had a friend or friend's dad who is an officer, and have them watch him. I don't know how much of this is realistic for your situation, feel free to ignore the comment.