I don't think people in significant pain can control it by changing their perspective or view point on the situation. It is like telling people with worn out hips ( and terrible hip/ leg pain) to stop catastrophizing and feel better. No orthopedic doc recommends that !!! These people get rid of pain with a hip replacement.
Unfortunately, we do not have the technology or expertise to carefully define exactly where the ' fibromyalgia' pain is coming from. Virtually no one has looked at pain syndromes in people with scoliosis. Before MRI Chiari malformations, syringomyelia, and tethered cord syndrome were not at all clearly diagnosable or defined. There is still a lot of disagreement on exactly how these syndromes can be diagnosed - what is normal, what is causing symptoms.
There is a condition called myelomalacia ( tiny bubbles of spinal fluid in the spinal cord)that can not be seen on typical MRIs.
When so called experts state that Fibromyalgia pain is due to catastrophizing it invalidates the terrible disability, loss of 'Life,' and human suffering that these once healthy and pain- free individuals are experiencing.