I have been struggling with depression for 35+ years.
I have attempted to kill myself. [Yes I failed at that too! =)]
I thought about (and planned) killing myself several times a day.
I have had 6+ Psychiatrists.
I have tried EVERY drug available.
Electric Shock Therapy was going to be next, but I have avoided it.
The best drugs only work for 6'ish months for me.
Then my doctor offered an experimental Ketamine treatment. I've had 3 rounds of treatment over the last 6 years. I didn't obsess about killing myself any longer. It's almost like I forgot to dwell on it.
I still have some bad days, but my bad days now are better then my best days used to be. So that's an improvement.