end it (all)
To kill oneself. If they diagnose me with a terminal illness, I'd rather end it all now, instead of suffering. Poor Dave is just too intense about his schoolwork. He's ready to end it all if he gets a B+! This is the message to all the young people who are thinking of trying to escape the pain by just ending it: it gets better.
end it (all)
Euph. to kill oneself. He had been depressed for months. He decided to end it all. I'm no good to anybody. I'm going to end it. Don't try to talk me out of it.