[HTMIOA]

If I got 10 friends to alternatively follow you every day, and you would notice that, would it still be in your own head? There were reasons I had been followed, at that was they thought I would run, because I already did before, but had been found.

[runjake]

Again, where is the external evidence, outside of your own head?

Feeling convinced you're being followed/watched is a classic symptom of paranoid schizophrenia.