1:1 Selective Mentoring
-Marc Siles
A personalized mentoring experience for executives and impact-driven leaders
Designed to transform reflection into decisive action, navigate complexity with clarity, and strengthen the leadership that drives meaningful progress.
This mentoring partnership focuses on strategic and personal growth — refining thinking, enhancing leadership maturity, sharpening decision-making, deepening collaboration, and sustaining disciplined execution. Each engagement is tailored to the leader’s context, combining strategic perspective with human depth, so growth becomes visible, systemic, and lasting.
For CEOs, senior leaders, and executive teams navigating complexity, high expectations, and the realities of transformation.
Whether working one-on-one or with the entire leadership team, this mentoring partnership supports those who lead ambitious organizations where clarity, trust, and alignment are constantly tested.
It’s designed for leaders who want to turn friction into focus, strengthen collaboration, and sustain performance under pressure.
It suits those ready to move from “good enough” to disciplined excellence — where strategy, culture, and execution reinforce each other, and leadership becomes a collective advantage
To Strengthen Leadership Where It Matters Most
Because leadership defines how strategy lives and how culture performs.
This mentoring partnership helps leaders and teams move beyond obstacles and see challenges as catalysts for growth. It provides the clarity and perspective needed to make better decisions, strengthen collaboration, and build trust in demanding environments.
It also creates a safe, high-trust space for reflection and experimentation, where new perspectives emerge, growth mindsets take root, and performance improves in visible, measurable ways. The result is lasting progress: leaders and teams that thrive in complexity.
Your Growth Journey
"The pessimist complains about the wind.
The optimist expects it to change.
The leader adjusts the sails."
— John Maxwell
Discovery & Strategic Alignment
Understanding your goals, challenges, and organizational context. Together, we define priorities, align expectations, and create a roadmap for growth.
Vision & Goal Setting
Developing a clear vision for success and setting measurable goals. For executives, this includes leadership objectives; for teams, it’s about aligning collective purpose with strategic priorities.
Self-Awareness & Diagnostics
Using the right tools and tailored feedback, we identify strengths, blind spots, and growth opportunities. This builds the foundation for focused development.
Actionable Development Plans
Crafting customized strategies and skill-building initiatives to address the identified challenges, enhance collaboration, and drive measurable business outcomes.
Implementation & Real-World Practice
Executing plans in real-time, applying new strategies and skills to tackle business challenges. Regular check-ins ensure progress and adaptability.
Reflection & Sustainable Growth
Wrapping up with a comprehensive review of achievements and lessons learned. Establish frameworks for continued development and long-term success.
Real stories from leaders who’ve seen their culture, teamwork, and results transformed through working with Marc.
Trusted by organizations facing complexity, and upholding societal infrastructure.
Marc Siles
Strategy Consultant
Executive & Leadership Coach
Marc Siles is an international Strategic Leadership Expert with 25+ years of experience helping organizations master the interplay of strategy, culture, and execution.
He advises global companies and top HR teams on how to transform leadership mindsets and deliver lasting performance.
Download the 3-level Fulfillment Tool and the Leadership Unblocked Paper
A tool for leaders ready to align success with significance. Explore the Three Levels of Fulfillment in One-on-One Mentoring and how to elevate your leadership capabilities.