This is an important issue that all TMS sufferers can gain benefit from examining. First of all, I think it is very important to remember that the purpose of the symptoms is to make you feel helpless, anxious and fearful. What could be more fear and anxiety producing, or create a greater sense of helplessness than the idea that you will never get better? These kind of thoughts are natural reactions that almost anyone would have to chronic pain. They are the result of human instinct, compounded by any sort of patterns we have picked up along the way (more on that below). So first of all: be patient with yourself. Recognize that the pain is specifically trying to make you feel this way, so there is no shame or failure in experiencing those feelings. The question becomes not "Why do I experience this anxiety, what the heck is wrong with me" but rather "How can I address this anxiety and help myself to feel better".
There are a number of good suggestions above as to how you can address that desparing voice, but I thought I would add a couple ideas into the mix. One thing you can do is to create an evidence sheet, a list of reasons that demonstrate that you do indeed have TMS. So many of my clients benefit from being reminded over and over, that their symptoms are
not structural. Maybe your pain comes and goes, maybe it moves around, maybe you have a clean MRI, or a Doc that you trust has told you your symptoms are stress induced. Whatever it is, write it down and put it somewhere that you will see it often. Whenever you feel that voice telling you that you will continue to be stuck, remind yourself of all these reasons that demonstrate to you that the symptoms are not structural. If the problem is not structural, it can be dealt with. It will take practice, diligence and hard work, but it can be done.
If you find that the problem is not buying into the TMS diagnosis but rather that you doubt your capacity to overcome TMS, then you must recognize that this is a self-abusive behavior. This is what got you into the problem in the first place! Telling yourself that you aren't capable, judging yourself for being stuck, doubting your capacity to take on the practices, these are all judgmental, pressure based thoughts that your inner bully uses to keep you subservient and in pain. Part II of the
TMS Recovery Program goes into detail on how to address these kind of thoughts. This kind of self-abuse is key to understanding your own patterns and how they are connected to your symptoms.