Do you have the option of changing to another dr? It sounds like it might be a good thing to do. A little less pop culture and more internal investigati on might be in order. I do think the mindfulness is useful for anyone. My brother just got diagnosed for an autoimmune disease that he has been suffering from for decades. He was put on a year course of prednisone which has made a huge difference in his pain. However, I don't advocate for it since it is a harsh medication which has systemic affects. My point is just that you need a second opinion all of it IMO.
I hope you get the help you need.