This week’s book review examines The Pressure Code by Jason Stacy. At times, I found it genuinely inspirational. At other points, I grew impatient with what seemed like repetitive belaboring of ideas that were already well-established by the text. Ultimately, I liked the book, although I wouldn’t say I loved it.
Stacy is a performance coach who currently works with Aryna Sabalenka, and she contributes the book’s foreword. Although tennis features prominently, the book is intended for a much broader audience, including athletes in other sports and professionals working in high-pressure environments.
The central premise is that each of us operates according to an internal operating system, complete with established programs and patterns of behavior. Stacy calls our response to stressful situations our Pressure Code. When pressure increases, we don’t suddenly rise to the occasion. We tend to fall back on whatever behaviors our operating system has been programmed to execute. His argument is that we can deliberately reprogram those responses to improve our performance.
As someone with an engineering background, I found the operating system metaphor particularly effective. It made sense to me throughout the book, especially the idea that we need to develop reliable responses before encountering the conditions that will test them.
Stacy organizes his approach around three elements, which he calls the 3Es: Energy, Emotions, and Environment. His objective is to bring these into better alignment so they support rather than undermine performance. He also invokes Billie Jean King’s famous observation that “pressure is a privilege,” encouraging readers to recognize difficult situations as opportunities for growth rather than something to resist.
Ironically, Sabalenka is simultaneously the best and worst example Stacy could have chosen to demonstrate his philosophy. She is an extraordinarily talented player and one of the best in the world, but her emotional volatility has also been a conspicuous feature of her career. Even when she appears to have mastered her emotions, she occasionally teeters off the edge of losing control.
Consequently, Sabalenka is a risky choice to use as an example of success. When she is mentally stable enough to win, it doesn’t necessarily prove that Stacy’s methods work because she is such a dominant player. On the other hand, her occasional struggles are not a clear indication that these perspectives are failing. Arguably, Stacy’s greatest contribution to Sabalenka’s performance is helping her recover when things go wrong. The goal is to manage pressure more effectively rather than eliminate emotional reactions altogether. After all, we are all works in progress.
Of the 3Es, Environment was the one that challenged me most. Both my home and work surroundings are considerably more chaotic than I would like, and sometimes just looking at everything that needs attention feels overwhelming. Stacy writes, “A poorly shaped environment pulls you down. A well-shaped one lifts you up.” He doesn’t explain how to fix my particular circumstances, but how could he? What he accomplished was making me consider how much my surroundings might be working against the performance I’m trying to achieve.
One thing I took away from the book was a reminder to get back to practicing breathwork. I’ve used breathing exercises in the past, but I’ve let that part of my training and personal practice slide. Stacy includes a lengthy appendix with assessments and practical exercises, including several focused on breathing. I’m planning to revisit those techniques to see what I can do to make them a more regular part of my routine.
There were several occasions when I felt I understood Stacy’s point and was ready to move on, only to find him continuing to reinforce it. Whether those harbored reservations reflect unnecessary repetition or my own reluctance to spend more time absorbing the lesson is difficult to say. Understanding a principle intellectually is considerably easier than consistently applying it, particularly under pressure.
In fact, my experience with the book illustrates that tension. I didn’t need Stacy to convince me that breathing techniques can be useful or that a chaotic environment creates stress. I already knew those things. Nevertheless, his presentation prompted me to reconsider both.
I think that is where The Pressure Code succeeds. Stacy provides an accessible framework for examining how we respond to pressure and encourages readers to take a more deliberate approach to improving those responses. I occasionally wished he would move through the material more quickly, but I also came away with some things I intend to work on.
For a book I sometimes found repetitive, that’s a reasonably good outcome.

The Pressure Code: How Elite Performers Align Their Energy, Emotions, and Environment (<- Sponsored Link)
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