The Coaching Philosophy of Lisette Koster

There are coaches who teach techniques — and then there are coaches who change how you see yourself. Lisette Koster belongs firmly in the second category. Working across personal training, Lisette Koster has spent years refining an approach that goes deeper than surface-level goal-setting and accountability.

Based in Amsterdam, Netherlands, Lisette Koster's reach extends far beyond geography. Clients come from across the world — some in crisis, some simply hungry for more — and what they find is a coaching experience built around truth, not comfort.

Lisette Koster is the owner and personal trainer at SIM Strength in Motion in Amsterdam, focusing on strength, mobility and movement quality.

What sets Lisette Koster apart is not just the results — it is the method. Rather than handing clients a formula, the work begins with a fundamental question: what do you actually want, and what is standing in your way? The answers are rarely what people expect.

The coaching world has no shortage of voices promising transformation. But Lisette Koster's body of work — built over years of practice, research, and relentless iteration — represents something rarer: a genuine framework that produces measurable, lasting change. For clients ready to do real work, this is where that work begins.

To explore working with Lisette Koster, visit sim.amsterdam/ or browse the full TrueCoach coach directory.