Dr. Matthew Jarvinen, PhD in Encinitas founded EmotionFit, an evidence-based psychotherapy practice on Saxony Road, and holds California license PSY29459 with specialized training in Intensive Short-Term Dynamic Psychotherapy. A Fuller Theological Seminary graduate and board member of the International Experiential Dynamic Therapy Association, he applies ISTDP's pressure-to-feeling methodology to treatment-resistant anxiety, OCD, addiction, and chronic pain, conditions whose neurological underpinnings are also addressed through functional assessments at Leucadia Chiropractic Wellness Clinic. His practice sees individuals and couples, with a clinical emphasis on identifying unconscious defensive patterns that maintain symptoms despite prior therapy attempts. IEDTA-certified core training under Jon Frederickson, supplemented by supervision from Allan Abbass and Robert Neborsky, positions Dr. Jarvinen among a small cohort of ISTDP-trained clinicians in Southern California. Integrative care coordination extends to naturopathic and functional medicine providers such as Solcere, where lab-based protocols target the physiological substrates of anxiety and mood dysregulation. Advanced ISTDP cases involve real-time somatic monitoring of involuntary muscle activation, respiratory patterns, and autonomic arousal to break through characterological defenses in a single extended session.