I also Have recently benn diagnosed with Bi Lateral Thoracic Outlet Syndrome.
Not to mention I had Artficial Disc Replacement surgery @ L4-5 in my low back about 4.5 months ago.
I have found that stress & anxiety can deffinately have an adverse effect on both of these pain generating conditions, especially the TOS.
Stress usually manifests itself inthe shoulders, Trapezius and chest muscles
all of which then translate to tightness in the sterno clietomastoid and scalene muscles of the neck. It is thes muscles of the neck in which TOS generally resides. not to mention tightness of the mandible joints.
Unfortunately it seems to be a viscious circle where chronic pain causes anxiety and stress which serves to magnify or further irritate the chronic pain!
hing Its hard to win in a situaution like this. Therefore anything that can help
your mental well being will have some positive effect on your pain!!!
I think meditation or prayer are great tools as well as breathing excersizes
that teach you to breath diiferently so as to reduce the involvelment of the upper chest and neck muscles when you breath.
In my case i also found it helpfull to start taking antidressant/anxiety meds,
whereas that may not be for everyone it has made a difference in my pain levels.
hang in there.