I think I can see where the urge to repress feelings to maintain the "happi-ism" does exist. I feel it's is core to many TMS suffers, we can be so out of touch with what we really feel putting on that happy face, all is good, we can handle it all. It is a very American phenomena as you mentioned and I see people maintaining the "status quo" to avoid conflict and keep the happy face on. Another very American way to avoid feeling is to consume, foods, drinks, drugs, shopping, sex...etc. The US economy is designed to benefit the married couple so it makes sense to hold it all together no matter what...although those trends are changing. There are many single women having children raising a whole generation of TMS prone youths. It falls in line with - don't think, don't feel, don't talk about it, be strong = repress...we want to look like we have it all together, don't let the team down.
I see TMS in my 18 year old daughter with knee pain and jaw pain due to old injuries. We are in the process of moving to another state and she is graduating early from high school to start a radiography program. She is upset about leaving her friends and boyfriend and she expressed this to me. I told her its ok to cry, its ok to be sad, its ok to feel. I stayed with her through her and just listened and comforted. I had no solutions and offered no solutions, but I rode the waves of sadness with her. It is, what it is. I told her life happens through her, not to her and she understood completely. She is not good at wearing the mask of happiness when things are not happy. My husband once said to me, "You're so easy to read, I can tell when you're not happy. You're not good at hiding your true feelings." I asked him, "Why would I want to hide my true feelings?" .... he had no response.