Stories from the field.

Trainings, book news, insights and personal stories.

Read the whole series in order
What do you actually mean by honest and relaxed sales?
Book28 April 2025

What do you actually mean by honest and relaxed sales?

Recently someone came up to me with a question. "But Klaas, what do you actually mean by honest and relaxed sales?"

Personal18 March 2025

Why I invest in the next generation of entrepreneurs

Two young entrepreneurs, Niek Lintermans and Max Berkelmans, received a session as a gift. Why I invest time and revenue in the next generation.

Personal11 December 2024

100 Lessons from Tony Robbins' Date With Destiny (DWD)

Last week I joined Tony Robbins' Date With Destiny, a six-day, life-changing experience. Here are my top 100 lessons.

100 Lessons from Tony Robbins' Unleash The Power Within (UPW)
Personal10 June 2024

100 Lessons from Tony Robbins' Unleash The Power Within (UPW)

Four intense days with Tony Robbins at Unleash The Power Within in Birmingham, alongside 12,000 others. Here are my top 100 lessons, nuggets of wisdom and strategies.

Why Tony Robbins Visited Me in Amsterdam
Personal9 April 2024

Why Tony Robbins Visited Me in Amsterdam

At 23, utterly inspired by Tony Robbins, I dared to dream big. Years later he flew to Amsterdam to baptise two tulips named after him and his wife. This is that story.

The 100 Lessons from Tony Robbins' Business Mastery
Personal4 March 2024

The 100 Lessons from Tony Robbins' Business Mastery

With many friends I attended Tony Robbins' Business Mastery at the RAI in Amsterdam. In this blog I share the 100 most important lessons, tips and tactics from this five-day intensive training.

Klaas Kroezen sells his stake in WUA
Personal2 November 2022

Klaas Kroezen sells his stake in WUA

After 15 years my adventure at WUA has come to an end. A look back at the journey, the lessons and what comes next.

Klaas Kroezen in Ouders van Nu: In my mind I was already a father when that role was taken from me
Personal16 August 2021

Klaas Kroezen in Ouders van Nu: In my mind I was already a father when that role was taken from me

Klaas Kroezen and his wife Rosalie went through seven miscarriages. In Ouders van Nu, a Dutch parenting magazine, he speaks openly about grief, hope and the little miracle that finally arrived.

100% Inspiratie podcast: Thijs Lindhout in conversation with Klaas Kroezen
Personal15 June 2021

100% Inspiratie podcast: Thijs Lindhout in conversation with Klaas Kroezen

In his 100% Inspiratie podcast, Thijs Lindhout talks with Klaas Kroezen about mindset, sales, building the right team and how to turn your life into a masterpiece.

How Klaas Kroezen built an international company thanks in part to kitesurfing and meditation
Personal8 September 2020

How Klaas Kroezen built an international company thanks in part to kitesurfing and meditation

Thanks in part to kitesurfing, yoga and meditation, Klaas Kroezen found the energy, discipline and focus to build an international company. Ten years after the start, he shares his ten most important lessons.

BNR Marketing & Sales Podcast: Start with the Customer! - Klaas Kroezen
Personal10 September 2019

BNR Marketing & Sales Podcast: Start with the Customer! - Klaas Kroezen

BNR, the Dutch business news radio station, talks to Klaas Kroezen about mindset, yoga, productivity, thinking big and staying focused, and about many things related to entrepreneurship and online marketing.

Kilimanjaro in 48 hours together with Wim Hof
Personal4 February 2019

Kilimanjaro in 48 hours together with Wim Hof

Together with his father and Wim Hof, Klaas Kroezen climbed to the summit of Kilimanjaro in just 48 hours in 2014. On making the impossible possible after all.