I think most of us on here go through that. I've posted about it before, but my feelings have evolved into a perpetual paranoia that people are literally just out to injure if not outright kill me and will do so if they get the chance. It got significantly worse when I was practicing my driving and some random truck just started tailing me for literally zero reason. He stayed like that for at least 20 minutes before finally screwing off.
I'm going to work towards getting a CCW in the near future. In the mean time, I need to get Mace or something to defend myself. I don't know why people actively want to harm me, but I certainly won't give them the chance.
Even before that, though, I definitely went through what you're describing. I swear that random niggas would always be eyeing me as if I had done something to them as if they're not some random Subway cashier wageslaving their lives away. I have thought of confronting them a few times, but I've always decided it wasn't worth the trouble...