My pain has been totally localized in my tailbone and is mostly triggered by sitting, although it changes in quality, frequency, and intensity which is why I feel certain it's TMS. It seems as if the things I've read are telling me I should be trying to act as if I have no pain or don't care about the pain and that I should stop "treating" it. I'm practicing "outcome independence" as much as possible (as well as following Howard Schubiners program Unlearn Your Pain) and I've definitely had improvement since I began my journey believing I have TMS. But using the special pillow, especially in the car, really does reduce the pain, every time. If the pain is TMS it makes sense that it's just my brain somehow convinced the cushion helps and I shouldn't need the pillow, but it seems impossible to get my brain to change that belief since the pillow does, indeed, reduce the pain from sitting. Any input appreciated!