Many different factors can cause TMJ discomfort, but the most common is stress originating from your neck and shoulders. This stress could result from many years of sitting at a desk with poor posture or simply carrying stress in that area. Using myofascial release and other techniques, massage can relieve tense muscles and allow your neck and shoulders to relax and stay relaxed. Also, you can do a few things on your own to maintain a state of relaxation between massages.