I also would suggest finding a massage therapist who knows about trigger points. For TMJ, neck pain, headaches, etc. you want to focus on your sternocleidomastoid
, scalenes, levator scapulae, trapezius, masseters, and temporalis muscles to start. The book has great pictures and direction. Or, any anatomy book or google these muscles and feel them out for any lumps or knots that produce pain.