I feel bad helping others CTB, but I'm here to get help myself, so...
I rehearse the hanging, so that I can do it quickly, with muscle memory, without thinking, when the mood strikes. I film this and watch it, this helps me visualize the act. I put the film up on the TV so I can watch myself rehearse too. Planning to do 10 rehearsals then attempt.
I'm gonna randomize the hanging, starting with 19 fake nooses, and 1 real one, like Russian roulette but with ropes and a 95% survival rate. Then I might reduce the number of false nooses until I CTB or get down to 5. Survival instinct is an irrational part of our animal brains ( I think?), and our animal brains irrationally think that we will live forever, so I just fool it into thinking it will survive. Also this way you get to have some fun with your CTB, and I'm curious what it will be like to walk around afterwards if I live. (Have you tried dangerous hobbies by the way? Having nothing to lose can open doors to new experiences.)
I remind myself I'll die eventually anyway, so it doesn't matter much anyway. (you could just wait for death to come to you by the way, no need to rush, this will end eventually so no need to dread life too much).
I remind myself: "Death is just sleep you don't wake up from." I call it the "big sleep" in my head. And when I picture suicide I don't imagine the part where I'm dead, the fantasy ends with "... and then I fall asleep forever". Sometimes I imagine the shotgun emitting a ball of blue light that just puts me to sleep instantly too. When I picture the radomized hanging method I'm actually planning to use, I always imagine myself picking a false noose too.
Kinda worried about an afterlife though, wherever I go I was headed there eventually anyway. But maybe you could fool yourself into believing there will be a nice afterlife to go to, so it could actually work in your favor? Don't stress about getting trapped into eternal life if you make it into heaven, God'll let you CTB in heaven if you want I'm sure. I've seen some stuff, so it's not as unlikely as you think.
Death will be the same as it was before I was born, I don't fear that, so I just "remember" what it was like before I was born.
I remember my reasons to die, and my lack of reasons to live: no friends, no family, no job etc. (if you have these maybe take some happy pills? might be worthwhile to stick around for them? Or you could get a cat? or two.)
I remind myself I don't matter, repeat some calming phrases:
"I am a grain of sand on the beach
I am a drop in the ocean
I am a leaf in the forest
I am a face in the crowd
I am one among 10 billion
I don't matter"
or
"Four and a half billion years ago the earth formed
four and a half billion years from now the earth will be consumed by the sun
this was true on the day I was born
this will be true on the day I die
I do not matter"
Self harm, this is also a nice little adrenaline release, expresses my self loathing and self destructive impulses, distracts from the emotional stuff too. It's honestly a pretty good time. It desensitizes me to self destruction and fear of bodily harm in general. It can get out of hand though, keep it on the upper legs is my advice. Harming elsewhere can be embarrassing (and get you institutionalized) and interfere with everyday activities like walking and using your hands, wearing t-shirts. I film this and watch it. Does anyone know a forum for self harm by the way?
You can make faces and do voices to overcome fear as well, snarl, grit your teeth, do angry eyebrows (hah), scream, shout "fucking do it!". Use a low pitch of voice, high volume. These techniques work for self harm too, and doing dangerous things in general.
Try doing other things that are scary, I like jumping off cliffs for example, this is also a fun hobby. I find it helps to stare angrily at the water below when I'm hesitating, like the water is an enemy, trying to intimidate me. I kinda just concentrate, and it just takes a moment of daring and then you're in midair.
DXM
I've been struggling with SI also, if anyone else could give me advice I'd really appreciate it, I shoulda CTB 10 years ago, I don't want to be here in 10 years thinking I shoulda done it 20 years ago.