I'd had big dramatic, traumatic experiences happen to me because of drinking that made me try to quit, but the quit never lasted very long. I don't think fear is the best motivator, the fear fades and the AV sets in telling you, it was a one off, next time don't drink so much, it was situational, you can handle it blah blah blah.
This time I was just ready. I was just so tired of dragging this problem around with me. I stopped trying to quit and decided that it was over, no more tries, I was going to do it.