First of all, I’m very sorry that you’re experiencing this. I am not a specialist in this area, so I offer these ideas modestly. What I have experienced myself and seen helpful for others is:
- Know that you are not dying. The pain is terrible, awful, and yet your core of being is still intact. Try to locate yourself in this center, this core, as a place of refuge. Try to be aware of what is also true about yourself and the world: the things that are not in pain, the things that are working, the things that are good.
- Have compassion for yourself. Bring a softness and sweetness to yourself, much as you would to a dear friend in extreme pain.
- Accept the pain. Resisting it just makes it worse. It is here, it is true, even though it is not your preference.
- See if you can explore it mindfully. Step back from it and observe the different aspects of the pain from a place of open spacious awareness. Try to see it more impersonally, as an intensely unpleasant collection of mental phenomena that are arising due to many causes and not created or owned by a “self.” Notice that awareness itself is untroubled by the pain it holds.
- If you can, notice the universal characteristics of any experience in the pain: made up of many parts, continually vibrating/pulsing/changing, arising and passing away due to causes, and insubstantial. In effect, any experience, including extreme pain is “empty” of absolute independent existence, and the recognition of this can bring relief and freedom.
- If you can, try to sense, intuit, or imagine the larger mystery, the unconditioned, the divine that is the ultimate space and basis of mind and matter. In this is our ultimate refuge, no matter how terrible the pain.