It has been about three years for me.
I am one of the ones who was successful, and they brought me back from it. I used a large amount of insulin, propranolol and other heart medications, benzos, and both radial arteries cut into with a scalpel. (First and only attempt)
The last thing I remember of that day is holding the scalpel pushing it into the carotid artery, and not being able to hold the scalpel anymore to do it, because of how slippery all of the blood was.
When I reached to the ground to grab it was when all of the medications must have made me pass out. I hit my head on a tombstone and cracked my skull. I was told a passerby saw and called the paramedics.
The emotions started to show back up this year.. which I did not expect. I am doing better. I did not think it was possible.