Actually it would work in theory I usually just use hot sauce
In theory that should work because capsaicin sends false signals to your brain saying that you ate something hot, temperature wise. So you could put hot water in your mouth or you could drink hot sauce and you should end up with a higher tolerance to both. It think.
"Christian Bible, the Gospel of Mark, chapter five, verse nine. We acknowledge this as an appropriate metaphor. We are Legion, a terminal of the Geth. We will integrate into Normandy."
Then you need to raise your pain tolerance. Start taking really hot baths (not showers that will scald your skin) and consistently make them uncomfortably hot. Set notches on your bath nozzle/knob/handle/thing that shows how hot the water will be at each level and every month make it a little hotter.
Bro you're insane lol I'd have burns all over my body then.