I remember complaining as a teenager why only strange people become witnesses and not the normal. The answer was that the happy people are happy in the world and can’t see the truth.
Every congregation has instable people, one of our CO’s suffered from depressions and was suicidal before he became a jw (that was part of his introduction at his first visit).
We had a few serious cases in our cong, one brother who worked at a music store started acting up one evening at our home, speaking very loud and not fully in control of himself. A few days later my father got called in the night and had to quickly leave the house. Later we were told what happened and went over to the home of the brother to tidy it. Broken music records and personal items were laying on the street. In the stairway as we got closer to his apartment smashed furniture was all over. The apartment looked like it was hit by a bomb. The chaos was covered with LP’s as his collection was very huge. The strangest thing was smeared chocolate cream on the walls.
Couple of days later I accompanied an elder visiting him in a mental home after a day in FS. The elder brought along different wts alerting about the dangers in music. He told the brother that it might be that he was attacked by demons because of the music he’s been listening to. The brother said that the problem was that he didn’t continue taking the medication he was under. He was warned but didn’t like the side-effects (gaining weight) and decided to reduce the doses. I asked him about the chocolate cream, to which he said he did that because he had to feed little creatures he saw. The brother was nice and friendly seeming back to normal. After all of this the brother moved to another city.
I doubt the elders counsel helped the recovery, but we had a ‘local needs item’ cautioning about demonic music. fts