Tag: Based in California

  • Alexsandra Walton

    Alexsandra Walton

    Alex Walton is a Certified Mental Performance Consultant (CMPC) who works with athletes, teams, and coaches to strengthen the mental side of performance. Her approach emphasizes proactive skill building, helping athletes develop confidence, focus, resilience, and self-awareness before challenges arise.

    Alex has worked with athletes across a range of levels, including NCAA Division I, II, and III programs, elite high school teams, and individual competitors. She has served as an embedded mental performance coach with collegiate basketball teams, supported Division I gymnasts, and worked with minor league baseball players.

    She specializes in working with adolescent and collegiate athletes, helping them navigate the critical developmental years of identity, performance, and transition. In addition, Alex partners with parents to support the broader ecosystem around the athlete, drawing from both her professional experience and her personal perspective as a parent of student-athletes, including one who competed at the NCAA level.

    Alex holds a Doctorate in Education (EdD), where her research focused on belonging, identity development, and how individuals build the skills to navigate diverse environments while maintaining a strong sense of self. Her equity centered work informs her approach to mental performance, particularly in supporting athletes from diverse backgrounds in developing confidence, voice, and agency within competitive spaces.

    Her work is grounded in the belief that mental performance is not just about outcomes, but about helping athletes build the tools to navigate pressure, adversity, and success with intention and confidence.

    Areas of Expertise

    Confidence, Self Talk & Performance Under Pressure
    Supporting athletes in building sustainable confidence, reframing negative selftalk, and developing mental habits that translate into consistent performance, especially in high pressure environments.

    Adolescent & Collegiate Athlete Development
    Specializing in working with high school and college-aged athletes, supporting them through key developmental transitions such as identity formation, recruiting, increased expectations, and balancing sport, academics, and life.

    Parent & Family Dynamics in Sport
    Partnering with parents to better support their athletes, improve communication, and navigate the complexities of youth and collegiate athletics. This work is informed by both professional experience and personal perspective as a parent of student-athletes, including one who competed at the NCAA level.

  • Sergio Trejo, LMFT

    Sergio Trejo, LMFT

    Sergio Trejo holds a Bachelor of Science in Developmental Psychology from Saint Mary’s College of California (2009) and a Master’s degree in Clinical Psychology from the University of San Francisco (2011). He is a licensed Marriage and Family Therapist (LMFT) with a deep-rooted passion for both athletic performance and mental wellness.

    Sergio’s connection to sports psychology began in high school through the San Francisco Parks and Recreation Youth Golf Program, where he served as an Assistant Instructor. His early involvement focused on helping youth develop foundational golf skills and confidence on the course. This formative experience sparked a lifelong interest in the intersection of psychological development and athletic performance.

    While pursuing his undergraduate degree, Sergio emphasized youth neurodevelopment, which further informed his approach to working with young athletes. During his graduate studies, he returned to the SF Park and Rec Youth Golf Program as Lead Instructor, balancing academic pursuits with hands-on instruction and mentorship.

    Following his formal education, Sergio entered the mental health field, gaining licensure as an LMFT and working extensively with individuals and families across the greater Bay Area. His clinical work is informed by a deep understanding of developmental processes, emotional resilience, and mental conditioning.

    In 2013, Sergio expanded his focus by immersing himself in Brazilian jiu-jitsu (BJJ), becoming a dedicated practitioner and eventually a competition coach. With over a decade of BJJ experience, he now specializes in helping athletes prepare mentally and physically for high-level tournaments. His coaching style integrates performance psychology, somatic awareness, and mindfulness practices to help competitors perform under pressure.

    Today, Sergio seeks to bridge his diverse background in golf, martial arts, and psychotherapy to support athletes in developing greater self-awareness, mental clarity, and focus—both in and out of competition. His holistic approach aims to foster not only peak performance but also long-term personal growth and resilience.

    • Specialties: Anxiety, Depression, Trauma, Junior athlete development, Identity Issues, and Mental Skills acquisition for Competition.
    • Clients: I would love to work with all types of athletes. I do specialize in Martial arts/MMA athletes as well as Golfers.   
    • Workshop/webinars: I would be open to leading workshops and webinars. I’d be comfortable in doing most Mental Health topics and Mental Processes for elite Performance type topics.
  • Julie Shiller, ACSW

    Julie Shiller, ACSW

    Julie Shiller is a Mental Performance Coach and Associate Clinical Therapist (ACSW) with over 15 years of experience in coaching, youth development, and human performance. She is the founder of The Other 23 Hours Coaching, a practice dedicated to helping athletes, coaches, and parents build the mental, emotional, and behavioral skills that fuel high performance and long-term well-being.

    With a background in strength and conditioning and a Master’s in Social Work, Julie integrates sport psychology, mindfulness, and habit formation to support youth, teen, and adult athletes—specializing in LGBTQ+ youth and girls’ and women’s sports, with a passionate focus on keeping girls in the game. Her approach includes self-talk training, mental imagery, breathwork, and the development of high-impact routines—addressing the often-overlooked hours beyond practice and competition.

    Julie holds certifications as a Pain-Free Performance Specialist, ACSM Personal Trainer, and Precision Nutrition Coach. She is currently a CMPC applicant through the Association for Applied Sport Psychology and is working toward LCSW licensure in California.

    Her mission is to help athletes and coaches not just perform—but truly thrive in sport and life. Julie also leads workshops for the Positive Coaching Alliance and is a dedicated advocate for equity and inclusion in girls’ and women’s sports, with a special commitment to supporting LGBTQ+ youth.

    When she’s not coaching or presenting, you can find her lifting in the gym, hiking with her black lab Millie, or catching a women’s game. She’s all about movement, rest days, and making performance both fun and sustainable.

    Specialties:

    • Mental performance coaching
    • Habit building and recovery
    • Confidence, motivation, and focus
    • Identity development outside of sport
    • LGBTQ+ affirming support
    • Resilience through injury, transition, or burnout
    • Bridging the gap between physical and mental performance

    Populations I work with / would like to work with:

    • Athletes (youth, collegiate, elite, and professional)
    • Coaches and sport leaders
    • Members of the sport ecosystem including athletic trainers, parents of athletes, and support staff
    • Women and girls in sport
    • LGBTQ+ athletes and performers
    • High-performing individuals navigating pressure, perfectionism, and performance anxiety
    • Fitness professionals and recreational exercisers who want to deepen their mental approach to training and movement

    Workshops / Webinars:
    Past presentations:

    • Championing Women’s Sports: A Holistic Approach to Athlete Development
    • The Other 23 Hours: Mental Performance, Recovery, and Resilience in Sport
    • Beyond the Game: Supporting Athlete Identity and Mental Health

    Topics I’d like to present on:

    • Building habits that support high performance
    • Recovery as a performance tool
    • Supporting girls and women in sport
    • Identity development and transition out of sport
    • Burnout and perfectionism in athletes
    • Mental performance tools for coaches
    • For fitness professionals: Mental skills coaching for clients, supporting motivation and consistency, coaching beyond aesthetics
    • For exercisers: Shifting from punishment to purpose in fitness, building sustainable motivation, managing performance anxiety in the gym 
  • Diana Lattimore, Ph.D., CMPC

    Diana Lattimore, Ph.D., CMPC

    Diana Lattimore, Ph.D., CMPC, is a Sport Psychology Professor and Certified Mental Performance Consultant through the Association for Applied Sport Psychology. Diana brings both personal and professional experience to her work with athletes and coaches. She grew up playing a few sports, but gymnastics quickly became her love and identity. After high school, she went on to compete in gymnastics at Southeast Missouri State University. During her freshman year Diana sustained an elbow injury that required four surgeries and sidelined her for 13 months. That was a defining event for her as she fought her way back both mentally and physically and fortunately was able to continue & finish a great collegiate gymnastics career. In 2019, Diana was inducted into the TN Gymnastics Hall of Fame, where she competed in high school!

    Her elbow injury also paved the way for her career in Sport Psychology. Diana has been working with athletes for over 15 years to gain mental strength, confidence, and resilience in order to get back and start thriving in the sports they love. Diana has worked with youth athletes, elite level athletes, collegiate athletes, Olympians and coaches. She is passionate about helping athletes along their journey in order to reach their full potential, perform their best, and enjoy the ride!