I told here that my ex threatened it once. It was a manipulative move, I knew that at the time and reacted accordingly.
I have experienced terminally awful non-drug responsive depression. I survived the attempt I made.
That was over 15 yrs ago now, and i've never been close to being depressed again.
I would remove the worse 'selfish' and replace it with self-focussed. Depression consumes your body, mind, everything, everything bad relates back to you.
I heard that depression is anger turned inwards. I think there's a lot in that. It makes a lot of sense.
Making the decision I did was not from weakness, it was to end the war I was fighting (and losing) i'd had enough. I felt that if others knew the pain i'd been in, they'd understand.
I know it was wrong, I did at the time, but the decision was all about ME really, in that I was awful, a pain, a burden and spiralling down hill.
The day after I was released from hospital I felt stronger than before, I think i'd faced down the blackness and survived. I'd won. I've not been depressed since, which if you knew the last few years i've had, would surprise you.
This thread is about those who make the threat to manipulate others. They do it out of their superego, not the loss of it.