Simon, I’m going to agree with Bruce here, and add that you are coming across as massively condescending. This may not be your intention, but I’m letting you know that that’s how your posts read.
Some people’s internal mental chemistry cannot be altered sufficiently to allow them to exist peacefully and happily in the society that we have created, in the same way that some people are born with a genetic makeup that means no matter what they do, they will get cancer. To try and reduce an incredibly complex and emotional issue to pithy soundbites and generic motivational quotes designed to make you feel better and less helpless about the issue is trite and insulting.
I’m sure you mean well, but please, try to understand the point being made.