Probably approaching zero. If you want to die, a gun has a very, very high probability of succeeding, and you’re unlikely to feel pain (assuming that you don’t miss the important parts of your brain). Hanging means–at best–breaking your neck and severing your spinal cord, and then dying by lack of blood flow to the brain while still feeling the pain from the broken neck. At worst, you fail to break your neck and then choke to death for several minutes. (This used to be the way hanging worked; rather than breaking their necks, execution victims would strangle. It could take longer than 10 minutes in some cases.) ODs tend to be quite survivable if someone finds you before brain death occurs, and ODing on certain OTC medications–like acetaminophen-- will take a few days to kill you from organ death. Cutting your wrists is absolutely going to hurt. Asphyxiation is difficult unless you’re doing so with an inert gas; CO2 buildup causes an involuntary panic reaction. Jumping is only fairly certain once you have access to something over five stories tall; less than that, and you’re likely to have injuries ranging from mild to catastrophic (although head-first onto concrete at three stories is pretty likely, if you can force yourself into a dive like that). Back when they used coal gas for cooking in England, that was a pretty common method. Likewise, mixing barbiturates and alcohol worked pretty well, until benzodiazepines almost entirely supplanted barbiturates.
Probably approaching zero. If you want to die, a gun has a very, very high probability of succeeding, and you’re unlikely to feel pain (assuming that you don’t miss the important parts of your brain). Hanging means–at best–breaking your neck and severing your spinal cord, and then dying by lack of blood flow to the brain while still feeling the pain from the broken neck. At worst, you fail to break your neck and then choke to death for several minutes. (This used to be the way hanging worked; rather than breaking their necks, execution victims would strangle. It could take longer than 10 minutes in some cases.) ODs tend to be quite survivable if someone finds you before brain death occurs, and ODing on certain OTC medications–like acetaminophen-- will take a few days to kill you from organ death. Cutting your wrists is absolutely going to hurt. Asphyxiation is difficult unless you’re doing so with an inert gas; CO2 buildup causes an involuntary panic reaction. Jumping is only fairly certain once you have access to something over five stories tall; less than that, and you’re likely to have injuries ranging from mild to catastrophic (although head-first onto concrete at three stories is pretty likely, if you can force yourself into a dive like that). Back when they used coal gas for cooking in England, that was a pretty common method. Likewise, mixing barbiturates and alcohol worked pretty well, until benzodiazepines almost entirely supplanted barbiturates.