For jaw joint discomfort, softer food cut into small pieces, avoiding chewing gum and very wide opening, and not biting your nails may help, as Jaw joint guide describes. This is temporary relief, not a diagnosis, and a sore jaw and a painful tooth may need different attention. A physiotherapist can show suitable exercises, and a doctor or pharmacist can advise on pain relief. A general online routine may not suit you.
If stress plays a part, Stress guide explains relaxation methods and psychological care. That does not make your discomfort imaginary. Keep a brief note of what changed, such as chewing breakfast or opening your mouth more easily. Jaw symptoms with difficulty eating or drinking, visual changes or frequent severe headaches need urgent care, not a long trial of home measures. Our contact page is the route for a dental review.
If something does not feel right, or the soreness is changing, call the clinic and ask. We would rather hear about a small change early than have you manage a growing problem on your own.