Unleash your full potential.

Take your mental game to the next level.

Empowering high performers to dominate their craft, build resilience, and achieve peak performance.

Hi, I’m Julie!

Hi, I’m Julie Shiller, a mental performance coach combining over 15 years of experience in strength and conditioning, social work, and sport and performance psychology to help athletes and performers unlock their full potential—both in their craft and life.

I founded The Other 23 Hours Coaching because while the field of play and the gym are important, the other 23 hours of the day truly shape your performance. I'm here to help you master the mental game, build resilience, and cultivate a winning mindset inside and outside your performance setting.

My mission?

To empower athletes and performers to:

  • Dominate the Mental Game: Develop the mental skills to perform at your peak.

  • Build Unbreakable Confidence: Believe in yourself, even when others doubt you.

  • Optimize Performance: Achieve peak performance, both physically and mentally.

  • Foster Positive Team Culture: Create supportive environments that drive success.

  • Build a Well-Rounded Identity: Develop a fulfilling life outside of performance through mindfulness, stress management, and self-awareness.

Because here’s the truth: whether it’s sport, performance, or life, success isn’t just about physical talent or technical skill. True excellence comes when we train the mental game with the same dedication and intention. And when you do that? Your confidence, consistency, and performance reach a whole new level.

I earned my Master’s in Social Work from the University of Denver and my Bachelor’s in Sociology from the University of Hartford. I’m also a Certified Mental Performance Mastery Coach, Pain-Free Performance Specialist, Sleep, Stress Management, and Recovery Coach, and ACSM-Certified Personal trainer.

Outside work, you’ll find me cheering for women’s sports, hiking with my black lab, Millie, sipping strong coffee, swinging a kettlebell, or relaxing on a rest day.

Let’s take your mental game to the next level and help you thrive in performance and life.

Book A Discovery Call

  • “Julie is an exceptional coach. I came to her with zero strength training experience but she created a welcoming environment and continuously works to make sure I feel comfortable and safe during our training sessions. She really takes a holistic approach - she incorporates nutrition, stress reduction, and recovery in her programming. Since working with Julie, I look better, I feel stronger, and I think differently about my health and wellness. And as an added bonus - Julie and her wife host a podcast, The Other 23 Hours, that expands on/ reinforces everything we talk about in our training sessions! Hands down the best investment I've made in myself. Truly grateful I've had the opportunity to work with Julie.”

    —Sarah L.

  • “Julie totally understood where I was coming from and she was happy to work with me to meet my particular set of goals. Julie's background in social work combined with her training expertise gives her the depth of understanding needed to serve clients coming from different backgrounds/life experiences/specific needs.

    Julie is everything you would want in a trainer. She is encouraging, kind, non-judgmental, supportive, and fun to be around. Her workouts are expertly crafted to suit you; they are challenging but doable, and Julie has a wealth of modifications available to help strengthen form. Her space is clean and inviting, and equipped with all the workout things one could need. But the best part about Julie is that her care for you extends far outside of the training session - she wants to know how the rest of your life is going too. She asks about sleep, stress, hydration, mood - all of the behind-the-scenes things that impact a workout. Julie cares about your goals, but more importantly, she cares about you as a person and your overall wellbeing.

    With Julie's support, I've never felt stronger, more mobile, or more confident in my body. Exercise is feeling more intuitive and fun than it has ever been for me. Lastly, I feel like I have someone in my life who is cheering me on about all the things, not just fitness.

    Julie is truly an amazing human being and it has been my honor and pleasure to spend time with her. I'm excited for all of the work we will continue to do together!”

    —Cameron

  • “I've had various trainers throughout my life but no one compares to Julie. This is the first time I've found a trainer that takes a holistic approach to fitness. She really focuses on all aspects of your health and helps you make the connections between them as well. I've only been a client for 3 weeks but the changes in my strength, self-talk, eating habits and confidence are substantial and tangible. I can honestly say my life has changed for the better since meeting her and I can't wait to see what the future brings. If you've been wanting to feel wholly better in many small and big ways, don't sleep on Julie.”

    —Monet M.

  • “Julie is an amazing and down to earth fitness instructor.

    She is really articulate and does an incredible job of building a fitness program to meet her clients goals.

    Julie's wealth of experience in the fitness industry allows her to share her knowledge with her trainees on how to effectively reach their goals while maintaining a healthy and balance lifestyle outside of the gym. She is definitely not your average personal trainer that has a "one-size fits all" approach. I have learned alot from my three months of training with Julie. I highly recommend Julie as a personal trainer!”

    —David C.

  • “Can't recommend Coach Julie enough! I started working with her when I was fed up with some past injuries that left me with chronic pain. She utilizes her extensive knowledge and experience to create a safe and supportive space for healing and growth. Julie meets you where you are at, but will also push you and challenge you to move out of your comfort zone when you're ready. I appreciate her holistic approach to fitness, recovery, mental health and how much what understanding what goes on outside the gym is a huge factor to any fitness goal.”

    —Kira G.

  • “Julie is everything you would want in a trainer. She is encouraging, kind, non-judgmental, supportive, and fun to be around. Her workouts are expertly crafted to suit you; they are challenging but doable, and Julie has a wealth of modifications available to help strengthen form. Her space is clean and inviting, and equipped with all the workout things one could need. But the best part about Julie is that her care for you extends far outside of the training session - she wants to know how the rest of your life is going too. She asks about sleep, stress, hydration, mood - all of the behind-the-scenes things that impact a workout. Julie cares about your goals, but more importantly, she cares about you as a person and your overall wellbeing. With Julie's support, I've never felt stronger, more mobile, or more confident in my body. Exercise is feeling more intuitive and fun than it has ever been for me. Lastly, I feel like I have someone in my life who is cheering me on about all the things, not just fitness. Julie is truly an amazing human being and it has been my honor and pleasure to spend time with her. I'm excited for all of the work we will continue to do together!”