Become The Leader Your Startup Needs

Selfmastered is a personal performance acceleration program for early-stage entrepreneurs. We help founders execute and grow 10X faster by training them with the most actionable frameworks from complexity science, behavioral science & neuroscience. Results guaranteed.

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You won't just improve, you'll also track your performance improvements using actual data.


Entrepreneurs do not fail because they can’t identify business opportunities, create great products, or gain traction, but because their self-management skills are insufficient to cope with the complexity of the fast-paced ever-changing business landscape. Entrepreneurs don’t have business problems. Entrepreneurs have personal problems that affect their businesses.


Selfmastered provides a data-driven, systematic & personalized approach to peak performance that blends the most actionable frameworks from complexity science, behavioral science, and neuroscience to achieve durable performance improvements you can track.

Articles For Becoming A Top-Performer

We publish monthly articles helping entrepreneurs in peak performance — so they can grow faster.

Lessons from Michael Jordan

Productivity As A Tail End

Sports Psychology for Top-Performing Entrepreneurs

How to Eliminate Unproductive Mental States

Algorithmic Thinking for Top Performers

Leveraging Neuroplasticity: How to Rewire Your Brain For Peak Perfo...

Read our Blog

How The Program Works

Our research-backed curriculum will help you master your performance, gain confidence in your abilities and destroy overwhelm, anxiety and self-sabotage at the root. We'll teach you how to continually build personal capacity so that you expand the limits of what you thought possible over time. Our framework has been tested with hundreds of entrepreneurs and professionals globally and is guaranteed to transform how you operate in your life & business.

#1: In-depth video library

Over 8 weeks you'll master the world's most up-to-date research-based curriculum regarding peak performance. You'll become a master at 8 core skills: systems thinking, goal-setting, execution, analysis & synthesis, focus, motivation, energy, and emotional control. 

#2: Battle-tested tools & templates

On top of the 50+ video lessons, Selfmastered has developed 30+ templates and exercises that expand the course curriculum and serve as guardrails for high performance.

#3: Selfmastered Dashboard

A proven way of transforming your performance is through data (both quantitative & qualitative) that measures progress across all relevant aspects of the System of You. Selfmastered provides its members a proven digital tool, the Selfmastered Dashboard, that enhances self-awareness and fosters feedback-loop-driven performance improvements.

#4: Weekly Q&As & 1-on-1 Support

You will have yearly access to weekly Q&As and have 1-on-1 with expert performance coaches that will push you far beyond what you ever thought possible. All of our coaches have relevant experience in the trenches of high-stakes business and entrepreneurship.

#5: Selfmastered Performance School

We provide access to the Performance School, a global community of high performers that provide support, accountability & feedback. It also serves as a continuous learning platform for its members, who have access to Selfmastered's latest R&D regarding peak performance.

What You'll Learn

Systems Thinking

The Exponential era demands a new type of paradigm. You'll learn how to see the world through the lenses of complexity-science & systems thinking, which allows you to analyze, optimize and manage yourself and your business differently.

Vision, goal-setting & direction

Traditional education around goal-setting is wrong. You'll learn why SMART goals are DUMB and why having a meaningful direction that coherently aligns long-term goals and short-term actions is a prerequisite for peak performance.

Execution protocols

We'll show you how to create a 12-week roadmap that leverages state-of-the-art strategic thinking to expand the limits of personal & professional performance... without overwhelming you.

Data-driven performance optimization

Self-development without data is just intellectual masturbation. The only way to transform your performance is to track selected data points (both quantitative & qualitative) to measure progress across all facets of your life & business.

Spiritual performance (Intrinsic Motivation)

Intrinsic motivation is the fuel that powers high performance. Any mental training that targets it needs to be highly personalized (N=1) and be based on science-proven principles to create long-lasting transformation.

Mental performance (Focus & Flow)

Without focus, there can be no high performance. The best way to train your mind for laser-like focus is to embrace deep work, harness the power of urgency to remove cognitive residue, and create boundaries that prevent interruptions.

Physical performance (Energy)

The fitness industry lacks a coherent all-encompassing performance-focused curriculum. You'll learn a systematic energy maximization framework that optimizes the most relevant physiological dimensions that affect your energy levels.

Emotional performance (Emotional Control)

Emotional management is crucial for long-term success, especially at the highest echelons of business. You'll learn preventive emotional management strategies that will ensure that you operate through life with low emotional variance.


Our students aren't just satisfied with the program, they have real results within 12 weeks.

10X Revenue

Saher, CEO of Traktion
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0 To €250k ARR

Francisco, CEO of Menhir
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0 To Reaktor.Berlin

Danilo, COO of Umi-Hotaru
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12x Revenue

Conor, CEO of Gallagmedia
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2X Revenue During Covid

Patrick, CEO of Lessonswithpatrick
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4X ROI + Marathon

Yannick, CMO of Nexgeon
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What Results Should You Expect?

We ran an internal survey to understand better the chief benefits that the Selfmastered program provides. The following six were the most upvoted by our clients:

Crystal Clarity

You will have crystal clarity on your priorities on a multi-year scale and how to best achieve them. No more second-guessing yourself.

2X-7X Productivity Increase

Your productivity will explode by learning how to leverage your cognitive capital (focus, motivation & discipline) for maximum results.

Minimal Cognitive Drag

You will eliminate all doubts, uncertainty, and emotional turmoil so you can be dangerously effective at work & fully present at home.

Enhanced Decision-Making

You will forget about stress-fueled suboptimal decision-making caused by overwhelm, anxiety & frustration.

Data-driven Roadmap

You will feel empowered, confident, motivated because you'll have a data-driven system for achieving & sustaining peak performance.

Machine-like Consistency

You will feel unstoppable by following a proven methodology that nudges you into performing at your best every day on autopilot.


Here you'll find free resources that help you accelerate your performance in life and business.


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Horacio León Castillo

Leon founded Selfmastered in 2020 to help entrepreneurs and professionals install the best frameworks for peak performance to accelerate their careers. Prior to founding Selfmastered, Leon worked at the intersection of venture capital and real estate, analyzing and/or managing investments across different asset classes as a Private Equity Real Estate Director and a VC Partner. Leon holds a Master of Science in Architecture from Madrid's Technical University (Spain) and Tongji University (China), as well as Masters in Management from IE Business School.

Selfmastered is for you if...

  • You are an ambitious entrepreneur willing to take yourself and your business to the next level without burning out in the process.
  • You are committed to your self-development but despise motivational fluff. You only trust science-based data-driven actionable frameworks.
  • You are a serious professional that is willing to accelerate your career without resorting to BS office politics.
  • You understand that the key to professional success isn't "hard work" but working with the appropriate clarity, direction & resolve. You just need a proven gameplan to pull it all together.
  • You are talented and capable but struggle to remain calm, collected, and focused in the middle of the storm.
  • You hate making excuses but haven't found the best way to execute your plans consistently and without fail. You've tried everything in the book but can't sustain your progress.
  • You remain convinced that the right combination of information, mentoring and an effective technological stack is what will help you achieve and sustain peak performance.
  • You have read every book imaginable on self-management, productivity, and ultimate human performance but still find yourself in dark places whenever a professional setback kicks in.


Want To Become A Top-Performer?

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