Ouch Meter!

It is amazing how one can take pain... Is it true that "pain is a sensation that I can choose to ignore"? I like the way the author of "Bravo Two Zero" when he was held captive. He wrote " my enemy can break every piece of my bone, only I can break my mind down".

I know I can be very task orientated. It is amazing to imagine how can one finish a 45 hours Tahan trail, and did a marathon a week later after having a hairline crack on his right ribs. I dun know how did I continue the 100km Japan Trail after spraining my right ankle at about 30km mark. hmm... Physical pain is probably something I can take pretty well... How well can I coop with emotional hardship?

What is more painful? Where can I find a true Ouch Meter?