I'm going to shamelessly plug the Feldenkrais Method of Somatic Education. For me, the best part about this method is the approach that each individual body is different, and the practitioner will help the client learn what is best for their body. There is no prescribed ideal posture, etc., just what is ideal in YOUR body. And through learning about it (as opposed to the practitioner simply "fixing" your body), you ultimately have more control to change your patterns.