I was like this and went on for years. I personally have always had problems with social anxiety. Go join a jujitsu club and go with him/her and build their con

I was like this and went on for years. I personally have always had problems with social anxiety. Go join a jujitsu club and go with him/her and build their confidence. Don’t restrict them as they’ll just double down and at the end of the day they are who they are and they are 18 and very unlikely to listen to their parents until they are way older.