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Performance Consulting for leaders

What do you want to accomplish in the next 3, 5, or 10 years?

At GJC, we help founders, CEOs, and executive teams turn ambition into real, measurable results.

We partner with high-performing business leaders to define a compelling vision, adjust their leadership posture, and shape a management tone that brings clarity — even under pressure.

Strategic positioning

Uncover what makes you unique so that you can naturally attract the right people, clients, and team members.

Leadership signature

Curate your distinctive leadership style, so that your decisions and actions reflect your real ambitions and values.

Management framework

Put together a simple, practical framework that allows you and your team to work better.

Internal communication

Strengthen your communication approach so that your interactions resonate and foster genuine connections.
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86% of successful CEOs & Entrepreneurs invest in performance consulting.

Why?

Companies see a 70% ROI in team performance.

  • Master advanced strategies to stay ahead of the competition.
  • Align your teams’ performance with your vision.
  • Turn resistance into actionable momentum.
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High performance starts with a mindset. And shows up in a method.

That’s what we build with every Executive we support.

Here’s how performance consulting works in practice:

  • Make faster, smarter decisions by focusing on what truly drives results.
  • Boost team accountability through clear roles, rituals, and rules of engagement.
  • Lead high-stakes conversations — with self-confidence, clarity, and the right tone.

High performance starts with a mindset. And shows up in a method.

That’s what we build with every Executive we support.

Here’s how performance consulting works in practice:

  • Make faster, smarter decisions by focusing on what truly drives results.
  • Boost team accountability through clear roles, rituals, and rules of engagement.
  • Lead high-stakes conversations — with self-confidence, clarity, and the right tone.

Run your team and business better

A business partnership based on expertise, perspective and practical solutions.

testimonials

What clients say

When I started working with Guylaine, I thought I knew what to expect, having experienced management training before. Spoiler alert, I had no idea! She not only took me outside my comfort zone—sometimes even breaking down walls I didn’t even know needed breaking down—but she also revealed blind spots I didn’t know existed. The Advanced Management Training Program is truly tailor-made and designed to align with your personality and goals. I can’t recommend GJ CONCEPTS enough. Prepare yourself for revelations—sometimes the unexpected kind!

Finance CFO

Multinational Corporation

Fantastic leadership consulting sessions! Guylaine’s ability to zero in on my challenges and help come up with the right solutions is second to none. Her direct approach and positive energy are invaluable. Thank you is not enough for the change you have helped me in my career. I highly recommend her Elite Leadership Development Program to any business leader looking to scale.

Founder & CEO

Luxury Retail Brand

Guylaine’s advanced management training program was instrumental in elevating my management skills to a new height. Her guidance was pivotal in achieving the superior level of performance expected of both myself and my team. Implementing proven methodologies alongside her openness to exploring innovative strategies changed my approach to my role. This partnership has not only been a game-changer in my professional journey, but also in how I perceive and tackle management challenges.

Management committee member

Leading Global Investment Firm

Thanks to my leadership consulting sessions with Guylaine, I was able to understand the place that Art was going to take in my life and be able to target the type of art I wanted to pursue better. By investing in her program, I avoided several years of wandering in my field.

Entrepreneur & Visual Artist

Contemporary Art Studio

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