Using the charcoal method, do it in a spacious room with a fan on and windows closed.. tape over the gaps in the door.
However DO NOT attempt this method in a tent.. you choke till you violently cough.. pass out and wake up with a serious migraine.
If going to hang yourself, do it secluded, if found you could possibly stay alive almost brain dead not being able to wipe your own ass.
If taking pills, make sure the dose is high enough, or you might just destroy your organs which you feel in the future.
If using a gun, be accurate as possible. I've seen videos where they're are dying slowly.. some where they survive, but with brain damage or severe trauma.
Slitting your wrist.. down the road not across, otherwise you look like an emo cutter.
Also with hanging yourself, make sure the drop is high enough/rope is long enough to pop the neck, otherwise it's a long asphyxiation process.
Drowning is highly unreliable like hanging.. it's not peaceful either.
