All articles.
Everything about selling honestly and relaxed, from the model to daily practice.
Read the whole series in order
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.

From persuading to honestly helping: how to transform your sales team
Your sales team calls customers and sends proposals, but somehow it feels forced. The targets are met, but the atmosphere is tense.

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 Sales Excellence Training with Heigo
What energy! At the closing session of the Sales Excellence Training with Heigo. In one month we worked through the full programme together.

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.

From customer to colleague: Joost Wammes becomes Customer Success Manager
I spoke to four trainers. Three of them were mostly focused on their own offering. But with Klaas it was different.

Sales Excellence Autumn Training: 10% better at sales in one month
Are you an entrepreneur or responsible for sales? Then these are the months when it happens.

21.7% better at sales after one month, that is exactly what happened to Joost
"I want to become the best at sales," said Joost. He already had experience, but felt there was more in him.