If you are one who likes to read medical publications (yet this one is far more psychosocial and approachable than most), you might like this paper, published in Mayo Clinic Proceedings back in 1997, by Ed Creagan, M.D., a Mayo Clinic oncologist:

-Attitude and Disposition: Do They Make a Difference in Cancer Survival? https://www.mayoclinicproceedings.org/article/S0025-6196(11)63478-2/fulltext

This paper is more focused on cancer, given this doctor's profession, yet he also refers to a variety of medical and surgical issues. Note the part of the abstract at the beginning of the paper that talks specifically about social support, which I'm quoting here:

-Psychosocial interventions can be life enhancing in sharp contrast to the guilt-ridden programs of some alternative practitioners. A social support system and an element of spirituality and religion seem to be the most consistent predictors of quality of life and possible survival among patients with advanced malignant disease.

@dannoyes I do. For me they are more important than my medications. I realize that others may see this differently. However for me, medications are a piece of the puzzle, but not the entire piece. I am medication resistant, so for me, I never know how long or if they will last, so I focus on what I have control over.