Coaching, through connection.

Clearer thinking for what comes next.

Change is personal. Coaching offers space to reflect, clarify your priorities and decide how you want to move forward.

Meet the collective.

Different approaches, a shared commitment to helping you find a coach who fits your needs.

Start with a conversation

Reach out to any Letter6 coach to arrange a 30-minute introductory conversation. It’s a chance to talk about what you’re looking for, ask questions and explore whether coaching together feels like a good fit.

If another coach in the collective seems better suited to your needs, we can help you connect with them—with your agreement. You choose who you work with.

Co-founder & coach

Sarah Halverson

Associate Coach Diploma · MBA · Working towards ICF ACC

Coaching focus

Leadership & career

Sarah holds a Master of Business Administration (MBA) and focuses her coaching on leadership and career. She offers space to explore your working life, consider the challenges you’re facing and think about the direction you want to take.

Whether you’re stepping into new responsibilities, weighing a career decision or exploring how you want to lead, the conversation starts with what matters to you. Together, you can reflect on your priorities, consider different perspectives and identify next steps that feel right for your circumstances.

  • Leadership
  • Career direction
  • Working life
Visit Sarah’s Practice Send Sarah a message

Co-founder & coach

Nikki Jongbloed

Associate Coach Diploma · Working towards ICF ACC

Coaching focus

Life coaching with GROW

Nikki offers life coaching using the GROW model — exploring your goals, your current reality, the options open to you and your way forward. This gives your conversations a clear structure while keeping your priorities and choices at the centre.

You might bring a personal goal, a decision you’re weighing up or a sense that something needs to change. Together, you can clarify what you’d like to achieve, consider what’s helping or getting in the way, and identify practical steps you’re willing to take. Your goals can evolve as you learn more about what matters to you.

  • Personal goals
  • Exploring options
  • Practical next steps
Visit Nikki’s Practice Send Nikki a message

Coaching credentials

Sarah Halverson and Nikki Jongbloed each hold the Associate Coach Diploma from Optimus Coach Academy and are working towards the International Coaching Federation’s Associate Certified Coach (ACC) credential.

Working with a coach

Each coach runs their own independent practice. Visit their site to explore working together and arrange your next conversation directly with them.

Growth is a
shared practice.

Our name comes from Seneca’s Moral Letters to Lucilius, Letter VI, “On Sharing Knowledge”. Its reflections on learning and personal growth inform the philosophy behind Letter6.

Letter6 brings independent coaches together around a shared belief: growth benefits from thoughtful conversation, honest reflection and shared knowledge. Each coach brings their own experience and perspective to a professional coaching partnership.

The collective gives us a way to learn from one another while each running our own coaching practice. For you, it means a choice of approaches and help finding the right fit, including an introduction to another coach in the collective when that feels more suitable. As Letter6 grows, that commitment to shared learning and thoughtful introductions continues.

“I feel, my dear Lucilius, that I am being not only reformed, but transformed.”
— Seneca, Letter VI · On Sharing Knowledge