Shunsuke Nakamura's Soccer Journal — Dissecting the Methodology of an 18-Year Writing Habit Through Science
Shunsuke Nakamura's soccer journal is the most celebrated self-development tool in Japanese soccer history. Known internationally for his deadly free kicks — including the iconic strike against Manchester United in the 2006-07 Champions League while at Celtic FC — Nakamura credits much of his success to an unbroken journaling habit. Starting in his second year at Toko Gakuen High School, he filled over 11 notebooks across 18+ years, creating not a simple diary but a highly structured system of self-regulated learning. This article reinterprets his journaling method through sports science frameworks and analyzes why this approach enabled world-class performance.
The Origin — The Day the Journal Began at Toko Gakuen High School
Shunsuke Nakamura started writing his soccer journal in his second year of high school. It began as part of a mental training program — and this 'trigger' structure is profoundly important from a sports psychology perspective.
Photo by Simone Nicora on Unsplash
Issei Toyoda, the mental training coach at Toko Gakuen High School, recommended that Nakamura start writing a journal as a method for 'controlling strong emotions in order to win matches.' This was the beginning of a habit that would last over 18 years — through stints at Yokohama F. Marinos in Japan's J-League, Reggina in Italy's Serie A, Celtic FC in Scotland where he became a fan favorite, RCD Espanyol in Spain's La Liga, and back to Japan.
What deserves attention is that the journal did not start as an obligation — 'you must write' — but with a concrete purpose: mental control. In Zimmerman's (2006) self-regulated learning model, the learning process is explained through three phases: 'forethought,' 'performance,' and 'self-reflection.' Nakamura's journal functioned as a tool covering all three of these phases.
The primary reason Nakamura's journal lasted 18 years was not because 'someone told him to write' but because 'he needed it as a tool to regulate his own mindset.' Clarity of purpose creates continuity — this is the single most important point for coaches recommending journaling to their players.
The Five-Layer Structure — Game, Training, Mental, Imagery, and Data
Based on the chapter structure of his published book 'The Soccer Journal That Makes Dreams Come True,' Nakamura's notebooks can be categorized into five layers. Remarkably, these layers cover all the major components of self-regulated learning (SRL) in sports science — though this was never the explicit intention.
Layer 1: Game Analysis
Nakamura recorded his decision-making process and alternative options for specific in-match situations. Rather than vague reflections, he verbalized specific moments — the time on the clock, the context, and the choices available. This corresponds to what Toering et al. (2009) measured as the highest-quality form of 'reflection': deliberate analysis of specific experiences.
It was about the quality of my running, not the quantity. If I had the ability to read the game better, I could have reduced my total distance covered. That would have let me touch the ball more, control the game, and deliver decisive contributions.
— Shunsuke Nakamura, Soccer Digest magazine
Layer 2: Training Log
A record of training sessions and self-assessed performance. In SRL terms, this is the practice of 'self-monitoring.' Research by Kitsantas & Zimmerman (2002) demonstrated that expert volleyball players outperformed non-experts in self-monitoring, self-evaluation, and attribution (causal reasoning) across the board.
Layer 3: Mental State
Nakamura documented his psychological state before matches and his methods for coping with pressure. Research by Gabana et al. (2020), published in Frontiers in Psychology, demonstrated that writing about emotional experiences promotes problem-solving and reduces avoidance behavior in athletes. Nakamura's candid recording of weaknesses, anxieties, and frustrations aligns precisely with this scientific evidence.
Layer 4: Imagery
Detailed descriptions of specific plays he wanted to execute in the next match. This is the practice of the 'forethought' phase in the SRL model — by verbalizing strategy in advance, he enhanced the precision of his in-game decision-making. For a player renowned for his set-piece delivery and vision, this pre-visualization proved especially powerful.
Layer 5: Data and Records
Accumulation and trend analysis of numerical data. Identifying patterns across multiple matches makes visible the medium- and long-term growth curves that single-game reflections cannot reveal. What modern AI analytics are now trying to automate, Nakamura was doing by hand — years ahead of the curve.
'Play in Spain' — The Goal Written in Notebook No. 9 That Came True
Nakamura first wrote 'play in Spain' in his ninth notebook, and roughly five years later it became reality. This fact serves as a compelling case study for both goal-setting theory and expressive writing research in sports psychology.
According to reviews of his published book, Nakamura first recorded the goal 'play in Spain' in his ninth soccer journal. Approximately five years later, he transferred from Celtic FC in Scotland — where he had already cemented his legacy with moments like his famous free kick against Manchester United in the Champions League group stage — to RCD Espanyol in Spain's La Liga.
From a scientific standpoint, two mechanisms were at work. First, as Locke & Latham's (2002) goal-setting theory demonstrates, specific and challenging goals produce higher performance than vague ones. The specificity of 'play in Spain' gave direction to his daily training and decision-making over a sustained period.
Second, there is the effect of 'expressive writing' as demonstrated by Pennebaker (2018) across more than 100 studies. The very act of writing a goal reinforces commitment at a neurological level and promotes goal-directed behavior at a subconscious level. Nakamura's case serves as practical evidence that these two theories work in concert.
The Evolution of the Nakamura Method — What AI Analysis in 2026 Can Complement
The 'cross-match trend analysis' that Nakamura performed manually can now be automated by AI. The combination of human reflective power and AI's pattern-detection capability represents the next generation of soccer journaling.
Nakamura's fifth layer — 'Data and Records' — involved accumulating numerical data and analyzing trends. This meant manually re-reading 11+ notebooks to spot patterns: a monumental task. In 2026, AI can handle this kind of work automatically.
However, what AI can replace is limited to 'pattern detection.' The core of Nakamura's journal — verbalizing decisions in specific situations, honestly recording weaknesses, constructing imagery for the next match — these remain uniquely human processes that no algorithm can replicate.
The most effective combination looks like this:
- The player writes — A three-layer post-match reflection: What happened? → So what? → Now what?
- AI analyzes — Detecting trends, patterns, and blind spots across five or more matches of data
- The player reads and thinks — Using AI-generated insights to decide on the next course of action
Reinforcing the self-regulated learning cycle that Nakamura completed alone — with 'human verbalization power multiplied by AI pattern detection' — this is the ideal form of the modern soccer journal. Footnote is built on this exact design philosophy.
Five Practical Lessons from Shunsuke Nakamura
You may not share a professional's talent, but you can adopt a professional's reflective methodology. Here are five actionable lessons extracted from Nakamura's journaling practice that you can start using today.
- Start with purpose — The key to sustainability is intrinsic motivation: 'I want to improve my game,' not 'someone told me to write.' Nakamura's journal endured because it served him, not because it was assigned.
- Write about specific moments — Not 'I played well' or 'it was a bad game,' but 'In the 23rd minute of the second half, I played a through ball with my right foot because...' Precision is what turns reflection into growth.
- Be honest about weaknesses — Self-protective journaling blocks development. Recording anxiety, frustration, and failure builds metacognition — the ability to think about your own thinking.
- Set concrete goals — Like Nakamura's move to Spain, write 'I will play in [specific league/country] within [X] years,' not a vague 'I want to play in Europe someday.' Specificity drives daily action.
- Build a habit of re-reading — Writing alone is not enough. Periodically review past entries to spot trends. Set aside time once a month to read back through your journal and identify recurring patterns.
Frequently Asked Questions
Is Shunsuke Nakamura's book about his soccer journal still available?▾
'The Soccer Journal That Makes Dreams Come True' (Bungeishunju, 2009) is available on the secondhand market and through Japanese booksellers. The original text is in Japanese, but the core methodology — structured reflection across game analysis, mental state, and goal-setting — is universally applicable and covered in this article.
Do I need to use the same type of notebook as Nakamura?▾
The format of the notebook does not matter. What matters is the process of structuring and recording game analysis, mental state, and goal-setting. Whether you use a paper notebook or a digital app, the essence of Nakamura's methodology can be reproduced.
Can younger players practice Nakamura's journaling method?▾
Younger players may not match the depth of Nakamura's analysis, but building a habit of writing just three things — 'a play that went well,' 'something to improve,' and 'a goal for next time' — captures the core of what Nakamura practiced. He himself started at age 16, and developing this skill gradually with age is entirely natural.
References
- [1] 中村俊輔 (2009). “夢をかなえるサッカーノート” 文藝春秋.
- [2] Toering, T., Elferink-Gemser, M. T., Jordet, G., & Visscher, C. (2009). “Self-regulation and performance level of elite and non-elite youth soccer players” Journal of Sports Sciences, 27(14), 1509-1517.
- [3] Zimmerman, B. J. (2006). “Development and Adaptation of Expertise: The Role of Self-Regulatory Processes and Beliefs” The Cambridge Handbook of Expertise and Expert Performance, 705-722.
- [4] Pennebaker, J. W. (2018). “Expressive Writing in Psychological Science” Perspectives on Psychological Science, 13(2), 226-229.
- [5] Gabana, N. T., Van Raalte, J. L., Hutchinson, J. C., Brewer, B. W., & Petitpas, A. J. (2020). “Written Emotional Disclosure Can Promote Athletes' Mental Health and Performance Readiness During the COVID-19 Pandemic” Frontiers in Psychology, 11, 599925.
- [6] Kitsantas, A., & Zimmerman, B. J. (2002). “Comparing Self-Regulatory Processes Among Novice, Non-Expert, and Expert Volleyball Players” Journal of Applied Sport Psychology, 14(2), 91-105.
Related Articles
How Pro Soccer Players Use Journals — Reflection Techniques from World-Class Examples
8 min read
The Complete Guide to Soccer Journals — How Pros Build the Habit of Reflection
7 min read
Soccer Notebook Culture in Asia vs. Europe — The Critical Difference Between 'Writing to Reflect' and 'Watching to Reflect'
7 min read
Mental Training and the Soccer Notebook Habit — The Science of Writing Your Way to a Stronger Mind
9 min read
Rhythm and Timing -- How Music and Dance Sharpen Soccer Performance Through the Science of Rhythm
10 min read
Track Your Growth with Footnote
Just record your matches — AI analyzes every 5 games. Visualize growth with PVS Score. All features free during beta.
30-second signup · No credit card required
Last updated: 2026-05-05 ・ Footnote Editorial