I have been suicidal almost my whole life, but I think I've only ever planned it out one time. Wrote out notes, gave away possessions, etc. It didn't end up working out though. Then I found this website and ordered SN back in 2019, and I kept it for a year or two to have the option around. (I don't have it anymore, unfortunately) I know I'm going to CTB at some point, but I'm not sure when that will be. I know I will just do it one day, with whatever my options around me are.
I guess if I could pinpoint an exact period, it would be around the date of a certain birthday of mine. This birthday was surreal for me because I never thought I would make it to that age. I used to tell myself that if I still felt the same way about life by that birthday, then I would end things. This was a few birthdays ago, and I am still here, still feeling the same way. It was that birthday though that I think I fully accepted I would not be okay in life, and that things wouldn't change. I made peace with CTB then. Whenever I actually do it is another story.