1. My narcissistic husband had been working on systematically breaking me down. I did not realize what was going on at the time, and had reached my breaking point. He had convinced me that I had absolutely no value as a human being at all.
2. My mother (who was EXACTLY like my husband -- we can break down MY role in the mess that was my love life another time because I CHOSE the same type of man every single time. Even when I consciously chose a man who was the exact opposite of everything I had ever been attracted to and oh look!! EXACT SAME FELLA I had always wound up with -- just had on different clothes) had told me she would take my children away from me if it was the last thing she did. When my children all became teenagers she convinced them all that the boundaries I had set to keep them safe were unreasonable. And they all, one by one, wound up moving in with her. I had effectively lost the only reason I had for fighting this world as hard as I did. I loved those kids more than life itself -- and I thought they were all happier without me so I believed my "work" here was done.
3. Therapy -- Psychiatrist prescribed a half dozen medications to treat "some" of my problems. The rest of the time he spend with me was to convince me I was a poor sick person who "needed" him to get better. I was "medication naive" and spend months of my life in a medication-induced haze.
About a year or so of all this working out broke me. I was so done and tried to end it a couple of times. I have no doubt I would have eventually managed to do it right, because I have several handguns and know how to use them. I just hadn't decided a gun was the way I wanted to go -- YET. What happened that saved me?
My husband decided to up the ante and include physical abuse along with the psychological/emotional abuse. Yeah, about that. Physical abuse is a HUGE trigger for me. I guess he didn't anticipate the ... Ahem ... "Fervor" with which a gal with a ton of pent up emotion can fight.

He hasn't laid a hand on my since. And I am still here. It's funny -- before that period of time in my life I had never once considered suicide as a viable option. Since then, I have considered it in one way or another, every day since the initial thought came to me. Interesting how the mind works.