> From what I can see, CFS definitely can be cured by "some sort of emotional technique". It's just that a lot of CFS patients simply don't want to believe it, so they essentially end up doing the exact opposite of what is required to recover, resulting in further illness rather than recovery.

How much of this is due to your personal experience vs survey of the data? "Cure" is a very powerful word. There are several examples of CBT providing beneficial results, but nowhere near complete cures as far as I know. It's important to separate our personal experience from the data about a disease with possibly heterogeneous patient population.

For the record, I have no doubt psychological state has an effect on ME/CFS symptom severity.