In a nutshell, to me, being ready means being physically, mentally and spiritually ready, having my method covered and having my affairs in order as much as possible.
I tick all of the boxes except the last one, although I'm objectively very close to finally being done with that aspect as well. It's been incredibly difficult because literally any strain whatsoever causes my condition to deteriorate, but it needs to happen sooner rather than later because it's never going to get any easier, and I don't want to leave behind a huge, confusing shit-show. I don't want there to be any question marks, I want the right things go to the right people, and I don't want to make things more any more difficult for people than it already will be.
As for what exactly being physically, mentally and spiritually ready means to me, that could be its own long post. I really struggle to articulate things properly due to brain fog – one of the many symptoms of the illness that makes me so incredibly suicidal, but even that is still "just" a piece of the puzzle in my overall suicidality, although it's nevertheless a big one – but it's just a certain, overall feeling based on a collection of factors. I know how it feels to want to die but to feel not quite ready for a reason I can't totally put my finger on (despite all of the suffering), and I know how it feels to be ready, because in the existential (i.e. physical, mental, emotional) sense, I've been truly ready for a few years now. Now, it's just a matter of finishing up with the rest of the technical stuff that I mentioned above, so that I can be completely ready and get the hell out of this body.
Also, just the fact that I've got a bottle of some nice sparkling wine put aside for "the big day" to celebrate there finally being an end to all of this pain, illness, trauma and overall suffering, and the fact that just the mere thought of that makes me want to cry tears of relief... I think that in itself says a lot about my degree of "ready-ness" as well.