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Meet Our Team

Dr. Hillary Cauthen

Clinical Sport Psychologist

Dr. Hillary Cauthen has been involved in athletics since the age of 4. Throughout her highly competitive training she has developed a love for sport and psychology.  At an early age, Dr. Cauthen was curious about the athletic mindset and finding ways to enhance one's "heart" and inner drive to reach personal success. While pushing herself to her physical limits, she began to understand the importance of mental strength.


Her education began with a focus in sport psychology. Through her studies, she realized the magnitude sport had on one's personal growth. Understanding the psychological aspect of sport, she began to blend the fields of clinical and sport psychology.


Dr. Cauthen strongly believes in the practice of: embracing personal growth, enhancing performance, and enriching one's passion for athletic and professional endeavors.


Dr. Cauthen is the Founder of Texas Optimal Performance & Psychological Services. Formerly served as the Director of Organizational Wellness & Performance for Austin FC and the performance psychologist for the San Antonio Spurs, where she developed their mental performance and wellness programs. Dr. Cauthen has developed private businesses that bring mental wellness curriculum to school districts across the nation, as well as an analytics company that helps predict the behavioral risk factors in players for teams in the NFL, NBA, NHL, MLB, and Premier League. Her work with high performance is breaking down stigma across communities which is highlighted in her book, "Hello Trauma, Our Invisible Teammate.”

Dr. Cauthen has over 17 years of experience working within the field of sport and performance psychology, is an active member in her local community, and professional associations, such as Association of Applied Sport Psychology (AASP), and American Psychological Association - Division 47 (Society for Sport, Exercise and Performance Psychology). She has experience teaching undergraduate and graduate students in psychology and sport psychology programs. Dr. Cauthen believes in giving back and growing the field and often mentors students/professionals seeking CMPC.


Dr. Cauthen is currently a Licensed Psychologist  in the state of Texas. She is a Certified Mental Performance Consultant. She serviced in variety of leadership roles, Membership Chair for the Division 47 of the APA - Society for Sport, Exercise and Performance Psychology and Elected Secretary-Treasure for AASP, 2019-2021.


Dr. Katie Hartmann

Licensed Psychologist & Licensed Specialist in School Psychology


Dr. Hartmann pulls from over 10 years of experience working with children, adolescents, and families to offer a variety of tools and techniques to help those who have experienced trauma and stressors. She has trained extensively in Somatic Experiencing, a body-based approach to healing traumatic stress, and is particularly passionate about helping youth develop a foundation for coping and resilience.


As part of this approach, Dr. Hartmann also understands that the entire family may need support when a child is struggling. She partners with parents/adults to navigate challenges, work therapeutic routines into daily life, and provide strategies so families can advocate for proper school-based support.


In session, Dr. Hartmann provides warmth, humor, and a focus on strengths. She helps her clients understand how different experiences present both in the mind and body. She is collaborative and works to set goals together with her clients and their families. 


Dr. Hartmann also specializes in psychological assessments for children, adolescents, and young adults. Dr. Hartmann’s assessments focus not only on diagnoses and test results, but mainly on providing answers into the family's specific questions and concerns. She loves writing readable,  jargon-free reports that tell a story about the individual with customized recommendations. When appropriate, Dr. Hartmann also offers feedback about the assessment and diagnoses to the child or adolescent. In these sessions, she empowers youth to understand their diagnoses, strengths, and advocate for themselves appropriately. 


Dr. Hartmann grew up in the midwest and moved to Austin in 2012. In her spare time, Dr. Hartmann enjoys playing board games with her husband, reading, journaling, and hiking. She is part of a multicultural family and has an orange and white cat. 


Dr. Hartmann is a Licensed Psychologist (Texas), Licensed Specialist in School Psychology (Texas), Nationally Certified School Psychologist, Somatic Experiencing Practitioner (SEP), and a National Register Health Service Psychologist




Ph.D. School Psychology, Illinois State University (APA Accredited, NASP Approved), 2012

B.A. Psychology, Truman State University, 2006


Mariya Fefilova

Mental Performance Coach

Mariya Fefilova is a Mental Performance Coach with a profound commitment to unlocking the full potential of individuals across various domains with diverse clientele ranging from athletes of all ages and levels (youth, college, and elite), military personnel, and corporate professionals. Armed with a Master's degree in Sport and Performance Psychology and a membership in the Applied Association of Sport Psychology (AASP) and the American Psychological Association (APA), Mariya brings a unique blend of academic insight, updated research, and practical experience to her coaching practice. Her journey into the realm of mental performance coaching was ignited during her collegiate athletic career, where she excelled in both Division 2 and Division 1 soccer. Despite her athletic prowess, Mariya encountered significant mental hurdles along the way, which called for the guidance and support of a sports psychologist that not only propelled her past these obstacles but is also ultimately what inspired her to dedicate her career to helping others navigate similar challenges. Now, Mariya pursues the mentally and physically taxing sport of bodybuilding where she practices what she teaches in order to stay disciplined and optimal.

Due to her firsthand experiences, Mariya possesses an unparalleled ability to empathize and connect with athletes and performers from all walks of life. Her time competing and studying at California State Monterey Bay and California Baptist University has equipped her with a deep understanding of the intricacies of high pressure stakes, and athletic and academic environments. Her holistic approach focuses on empowering individuals to overcome mental barriers, optimize their performance, and achieve their goals with unwavering confidence.

Mariya's passion for sport and performance psychology is palpable in every interaction, as she tirelessly strives to instill a winning mindset and foster resilience in her clients. Whether on the field, in the boardroom, or on the battlefield, Mariya is dedicated to championing the limitless potential that lies within each individual she serves.

Unlock your full potential and embark on a transformative journey with Mariya Fefilova, where success knows no bounds.

Exclusive 10% discount for Summer Skills Session with coach Mariya Fefilova

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