I've had suicidal thought for many years, but never done much but thinking and researching about it.
My fail can seem kind of hilarious. I wanted/tried to die from dehydration.. When I've had a week off, during winter, I stayed in bed 24/7 for 5 days without eating/drinking. But I started to feel like I was overheating inside and chugged down a lot of waters. It takes too much determination for this method. But apparently it's very peaceful.
Now I discovered this forum, and I have intention to try the dsmo sn method. Hopefully it doesn't fail.