Probably one of the best things I ever got out of the multiple types of counseling sessions we did over the years is for someone to find their rock bottom. To a 'normal' person, it's not that deep. To someone who is drug addicted, etc....it's far lower.
I think with John is was the ultimate cut-off with family and being in prison for the 3rd time. (In CA, he could have got life for that.) No money, no phone calls, nothing. He tried contact with grandparents, everything and got no response. I think it was then that he really realized he was alone in this world.
Now, panic sets in as you realize this is happening. It can go one of two ways. He can take his life, or pull up the boot straps and work hard to get out of his situation. It's very scary to watch it happen.
Abbey