While many of us think of pain in the traditional modality of the physical, often what gets overlooked is at how we can experience pain as a psychological relation to ourselves; and often what can and does occur, is that our untended mental states result in physical-pain.
I think this book by Brene' Brown is truly worth a read. So much pain in our culture is a result of people pushing themselves to the limits mentally and physically; not getting enough rest and just plain old continuing to attempt to "pick themselves up by their bootstraps".....which we all know by now is not possible, yet many continue to keep on trying.
Feelings of lack and not-enough-ness is rampant in our modern speedy culture. This emotional drain is a primary cause of not only emotional but also physical pain. These is no doubt in my mind that this is true. So I invite you to watch her TED Talks if you have not already seen them and please do grab a copy of this book, read it and pass it along to a friend and loved-one.
Blessings of Health and Goodness to You All!