So it passes.

Eventually you learn to let those "ghosts" go. They stop haunting you. They eventually fade into nothing leaving nothing behind as well as ahead of you. You're free to be whoever you want to be without having to look over your shoulder. Should you ever bump into these "ghosts" again in the future, they won't even haunt you but merely pass you by. They might try to speak to you or take you for a short walk down memory lane. But you won't let them. Because you know ghosts are after all dead. They no longer survive on the same plane as you. They're just here as figments of imaginations and memories which you have the power to bring to an end. If they try to hurt you, you'll have SO many weapons to arm yourself with. You have the entire FUTURE to fight them with. So just hang in there and bundle up. You'll get better at fending off these ghosts and you'll come out so much more stronger. So much so that when a ghost does approach you, you'll be able to greet them with a smile no matter how much they irk you.