Many people are oblivious to mental illnesses and how it doesn't take much for some people to snap. You never know how close some people are to their breaking point. It definitely isn't easy sticking besides someone who deals with mental illnesses. It's basically like they have a war in their mind , and they can't find peace. It can be numerous things from losing a loved one , career , abuse , etc, that can cause problems and people to spiral out of control.