My new book: Van klant naar fan (From customer to fan)
After Sales, Honest & Relaxed comes my second book: Van klant naar fan (From customer to fan). First it was about selling, now about what comes next. It is published in Dutch on 14 November 2026 and is available to pre-order.
'Sales is human contact. Genuine interest.' Read the interview at Managementboek.
'Sales is human contact. Genuine interest.' Read the interview at Managementboek.
The second print run is in. 2,500 books
This still feels unreal. The second print run is in. Grateful to everyone who reads this book and passes it on.
Number 1 in the Managementboek Top 100
Why does selling feel so forced? Because we are taught to persuade instead of help. This book shows how sales works when you listen honestly.
The book is a Bestseller at Managementboek
Number 1 in the Marketing category. And number 1 in the Advertising and Sales category.
BAM! Number 1 at Managementboek in the Marketing category
How wonderful that I can help so many people with honest and relaxed sales. A great reason to pop open a bottle of champagne.
The aftermovie of the book launch
With wonderful speeches by Pim van Tol (editor) and Simon Kornblum (managing director of Visma).
My new book: Sales, Honest & Relaxed
YESS! This milestone has been reached. I am so grateful for all the wonderful people we celebrated this with.
At the end of November I am launching my book: Sales, Honest & Relaxed
More than 25 years of sales experience with clients like Google, Samsung, Microsoft and ING. Everything I have learned, brought together in one book.
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?"