1-on-1 · Limited spots

High Performance
Mentoring.

Private mentoring for founders who want to operate at their A-game — mentally, physically and emotionally. Based on real assessments, real data and a plan that keeps getting better.

Request a conversation →How it works ↓
Lennart van der Ziel mentoring
How it works

Assess. Plan. Coach.

Peak performance isn't a feeling — it's measurable. That's where we start.

01

Assess

We start with a full physical and mental assessment — including health tests like blood work — so we know exactly where you stand. No guessing.

02

Plan

A specific plan for your physical health, and a plan for mental & emotional peak performance. Built around your life and your business — not a generic template.

03

Coach

Ongoing 1-on-1 coaching to make sure it keeps getting better. We measure, adjust and raise the bar as you do.

What's included

Everything measured. Everything personal.

✓Full physical & mental intake assessment
✓Health testing — blood work and other diagnostics
✓A specific plan for your physical health
✓A plan for mental & emotional peak performance
✓Regular 1-on-1 coaching sessions with Lennart
✓Continuous measurement — so it keeps getting better
Is this you?

This is for founders who

✓You run a serious business and know you are its biggest lever.
✓You want to operate at your A-game — mentally, physically and emotionally.
✓You want decisions based on data: assessments and health tests, not guesswork.
✓You want a mentor who has carried the founder weight himself.
Limited spots per quarter

Request a conversation.

A short, personal call to see if this is the right fit — both ways. No pitch, no pressure.