Recently I’ve noticed a change in attitude from a close friend of mine. He has become very bitter and hateful towards almost everyone. He does not say Salaam to anyone anymore, he’s very paranoid and distrustful of his brothers, and he just speaks about how he is angry at everyone including our Shia brothers. Is it better to leave him for now? Or to help him? I feel I should also note that before this shift in attitude he was very kind and happy and always joked and smiled.