I've had chronic suicidal ideation for decades. I don't really remember a time where my brain didn't default to "kill your self", even over relatively minor life challenges (part of how my BPD manifests).
After many misguided and failed attempts for a decade spanning around 12 through to my mid 20s, I attempted to get my shit together and stopped resorting to impulsive not thought out methods. I tried to give life a go. And I can admit, there have been periods in my life where I achieved a state of… if not happiness per se, at least stability and/or acceptance of life as it was/is. The ideations have never completely gone away but there have been periods where they've been manageable.
But for me, even though I'd had times of respite, even achieving a brief but euphoric state of actually having hope for the future in large part to a wonderful partner who then suddenly died - life has always seemed to hit me with more trauma than I'm capable of truly working through. From abuse as a child, leading to a string of abusive relationships because it's all I knew, to working so hard to break my own toxic patterns only to be hit with multiple significant bereavements in close proximity to each other, I'm now just exhausted. I don't believe anymore that it "gets better". Sometimes brief periods of it "getting better" makes the crash all the harder when it inevitably gets worse again.
I think I have believed since I was very young that my cause of death would be self inflicted. It's just a case of when. However I admit that the reason I'm still here is a combination of terror that an attempt will go drastically wrong, and my SI hindering actual follow through.
I read, I research, I plan. I practice partial most days attempting to find the right placement for quick blackout, and perhaps one of those practice attempts will eventually result in follow through.
Or perhaps not. For those who have managed to successfully CTB, I'm sad that life brought them to that point, but envious that they succeeded where I keep failing. I also think no matter the court of public opinion that they were very brave.
Peace is really the goal. Life can be wonderful for some people, and I wish it was wonderful for all of us, but I don't think my brain has ever been wired to be one of those people.