[He meant the emotionless will pass, but he knows John already knows that and is just lashing out as much as is possible for him when it's still all said in a calm monotone.]

That fear isn't something that's ever gone away for me, I'm sorry, I know that's not comforting. But you can do things to make yourself safer, so you don't have to stop treating the people who need you. Take someone with you who can fight back, who's there to watch you and make sure you don't hurt other people.