Yeah, there are a lot of things that you can do—or which can happen to you—which will help with not fighting against pain. Just undergoing a lot of painful stuff and noticing that it doesn’t actually kill you, is definitely one as well. (there are lots of anecdotes about people who’ve gone through a lot of terrible stuff and then being totally unfazed by more mundane things, being all like, “is that the best you’ve got, reality? I’ve been shot at in a combat zone, I’m not going to get freaked out by a dentist”. OTOH, some do get traumatized and even more freaked out by small stuff.)
Yeah, there are a lot of things that you can do—or which can happen to you—which will help with not fighting against pain. Just undergoing a lot of painful stuff and noticing that it doesn’t actually kill you, is definitely one as well. (there are lots of anecdotes about people who’ve gone through a lot of terrible stuff and then being totally unfazed by more mundane things, being all like, “is that the best you’ve got, reality? I’ve been shot at in a combat zone, I’m not going to get freaked out by a dentist”. OTOH, some do get traumatized and even more freaked out by small stuff.)