He has been buying a method called The Linden Method, which is basically trying to keep the brain occupied with deep thinking so that the mind does not allow these negative issues to be constantly mulled over. The problem is that he seems to have some sort of mental inertia and talks about this programme but cannot get started, despite help from myself to encourage and make suggestions to him.
Thank you for your input. I will continue to encourage him and to involve others as you suggest. My worry is that his condition has progressed too far for him to improve without the help of medication, in order to lift him sufficiently to get him to accept other/additional help. I will also try to urge him to get his doctor to consider other medication, not to just offer the same tablets that he had in the past that give him such side effects. Of course, that is if we are successful in getting him to the doctor!