I have right here a very short entry from Wikipedia...
Pain asymbolia - Wikipedia, the free encyclopedia
Pain asymbolia is a condition in which pain is perceived, but does not cause suffering. This usually results from injury to the brain. Preexisting lesions of the insula may abolish the adversive quality of painful stimuli while preserving the location and intensity aspects.
I had a dentist appointment today, and afterwards I found my teeth to be in considerable pain from all the poking and scraping that the dentist had done. It was just starting to get annoying when the thought occured to me that pain is simply a sense, a sense just as sight or smell is. With that thought I overcame the pain and while I still felt it I no longer thought it was unpleasant.
The article describes an actual condition caused by injury, but I reached, I feel, the same point through the simple understanding that pain is just a sense.
So my question to you is whether or not you feel pain is bad because of its very nature as a warning of harm to your body, or if you can overcome the nature of your mind and view feeling pain as no worse than seeing the color red or blue.