What's the most beneficial part of my fibromyalgia diagnosis?

Several. The question as to the most beneficial aspect of fibromyalgia (FM) is that it is non-cancerous, non-fatal, and is reversible. As to the latter, the stories of survivors should be reviewed. The survivors employed natural non-toxic therapies to improve their health. This is possible because FM is a multifactorial disorder, which responds to multivarient therapies.
Fibromyalgia diagnos. I'm not sure exactly what you are asking. Please clarify what your question is and we would be happy to help you. .