My "go to" is to take a bit of time to observe my different sensations across my whole body. Somatic observations and as I am mindful of how sensations, feelings and even pain wash across my body like waves that come and go. This changes my defensive, fearful mindset as Fred Amir calls it to one of acceptance and feeling safe. If you want to keep in check and even "cure" TMS mindfulness is essential. Pratice it every day and not only will TMS ebb away, your life will change for the better.