Change is the daily business

whole sum. partners with leaders and teams to navigate change, strengthen how they work together and build the capabilities needed to move forward.

Carrie Forrster - Founder of wholesum

Hi, I’m Carrie, Founder of whole sum.

Leaders today are being asked to rethink how their organizations operate while continuing to deliver results. They're navigating shifting priorities, evolving expectations and an uncertain future, often without a clear picture of what they're working towards.

In these circumstances, it's tempting to focus on structures, processes and plans. But lasting change depends on something less visible: how people understand themselves, relate to one another and work together.

That's where I come in. I help leaders and teams take a closer look at how they think, make decisions and work together. We question old habits, challenge assumptions and find better ways to handle what's in front of them

For change to stick, we need to look beyond behaviours

✳ SELF
How do you lead yourself?

Understanding the beliefs, assumptions, patterns that influence how you think, make decisions and respond to challenges.

⚉ RELATIONAL
How do you lead with others?

Building the trust, awareness and quality of connection that enable us to collaborate, navigate differences and achieve more together.

✦ SYSTEM
How do you shape the conditions for success?

Recognizing how structures, expectations and ways of working influence team behavior to create new conditions.


At whole sum., we work across three interconnected dimensions: Self, Relational and System.
Together, they provide a way to understand where meaningful change can begin.

Three ways we work

Through individual and team coaching to thoughtfully designed learning experiences, there’s a journey for you.

team coaching

✦ SYSTEM

Helping teams strengthen trust, navigate uncertainty and develop more effective ways of working together.

workshops & trainings

✳ SELF ⚉ OTHERS ✦ SYSTEM

Designing engaging experiences that challenge assumptions, spark new thinking and turn learning into meaningful action.

individual coaching

✳ SELF

Creating space for you or your leaders to gain perspective, navigate challenges for greater clarity and intention.

  • “To say that this was a great workshop doesn't do justice for how the mindset of my team has shifted.”

    — Team Leader

  • “Since the workshop, I notice a shift in my team. They are closer and communicating with each other much more effectively.”

    — Talent Manager, Zurich

  • “Carrie's joyful energy is both inspiring and contagious.”

    — Workshop participant

LATEST INSIGHTS: IDEAS FROM THE MESSY MIDDLE OF LEADERSHIP