“Immediate results. Klaas makes clear that everyone with customer contact is essential for commercial success, and gives you the tools to make it happen.”
From customer
to fan.
You're not in a sales role, but as an expert in customer contact you do determine whether a customer stays, grows and recommends others. That impact is commercial gold.
Your trainer is Klaas Kroezen, author of the bestseller ‘Sales, Oprecht & Ontspannen’, with 25+ years of international B2B experience.

Specifically for professionals in customer contact, service and delivery. Not sales techniques but connection skills.
Practical tools and frameworks you can use in every customer conversation starting tomorrow.
No standard programme. You train directly with Klaas Kroezen, author of the bestseller and your trainer. Always tailored, no junior or intermediate layer.
What it costs to
leave it as is.
Every customer who quietly leaves is growth you won't get back. This approach changes that, conversation by conversation.
- Customers who cancel before you noticed they were doubting.
- Growth left untapped because no one starts the conversation.
- Your team firefights instead of working ahead.
- Satisfied customers who never become ambassadors.
No fixed format.
We map the route together.
We start just as often with an inspiration session on location as with the online theory. Together we look at what delivers the most for you or your team. Always tailored.
Getting to know each other
We begin with a no-obligation conversation or an inspiration session on location. Together we discover where the most customer value is left untapped.
Your tailored track
We build the programme together: theory online where it helps, the training on location with your own customer cases.
Apply & keep improving
You turn customers into fans, and keep a grip on your customer experience with our Customer Experience Model. You keep improving after the training too.
From uncertain
to insight.
Before the training you don't know exactly where you stand. Afterwards you have a clear picture, with scores on six areas and a personal action plan.
Ready?
Slide and discover the difference.
Customers leave without you knowing why
Untapped potential in existing customer interactions
No structure in follow-up and relationship management
Constantly firefighting instead of working proactively
Difficulty discussing added value
Your team is engaged, but lacks the commercial skills
You spot signals early and act proactively
Every conversation contributes to growth and retention
A clear process from onboarding to ambassador
Calm and overview. You work ahead, not behind
You discuss value in a natural, relaxed way
Everyone knows how customer contact contributes to commercial success
Bewezen resultaat.
An average of 4.9 on Google.
“Real sales starts with who you are. Mindset, calm and genuine intention lead to connection. A must for anyone who wants to turn customers into fans.”
“This isn't about sales at all. It's about behaviour. About how you create genuine connection.”
Choose your track.
Online
Flexible and at your own pace. Start immediately with the full online training.
- ✓6 modules online training
- ✓Digital workbook with exercises
- ✓1 year access
- ✓Includes bestselling book
- ✓Certificate upon completion
Training + Coaching
Everything from Online plus personal guidance from kick-off to completion.
- ✓Everything from Online
- ✓Physical workbook with exercises
- ✓Personal kick-off session
- ✓Presentation with feedback from Klaas
- ✓Custom action plan
I deliver every training myself. That is why I start a limited number of programmes each quarter. Ask about availability.
Not sure which approach fits?
Let's find out.
Tell us briefly where you stand and what you want to achieve. Klaas will think along with you, genuine and relaxed. Together we look at which format fits you or your team.

Sales Excellence Training.
More revenue, less stress.
For sales professionals and teams who know there is more potential. Learn how to sell structurally better with authenticity and ease.
View trainingQuestions?
We're happy to help.
You turn customers into fans with genuine attention for the people who are already your customers, not with tricks. That is exactly what you learn in the Customer Success Training: retaining and growing existing customers in 6 to 8 weeks.
From customer to fan means customers don't just buy from you, but also root for you and recommend you. It is the theme Klaas Kroezen builds all his trainings on: more revenue, less stress, real fans. In the Customer Success Training you learn how to do that, specifically for people without a sales role who do have customer contact.
For people without a sales role who do have customer contact: customer success managers, service desks, account managers and consultants. A sales background is exactly what you don't need.
The online training consists of 6 modules you complete at your own pace. On average it takes 6 to 8 weeks. You get access immediately after payment and can start right away. The coaching variant includes personal guidance alongside.
Yes. Almost everything is tailored: you cover the theory online at your own pace, and we spend the on-location sessions entirely on your own customer practice. You also always train directly with Klaas Kroezen himself, no junior or intermediate layer.
More retention, more growth with existing customers and customers who actively recommend you. Every customer who quietly leaves is growth you won't get back. Turning customers into fans builds predictable revenue, without sales pressure.
Yes, we offer a customised in-company variant. With team-focused exercises, customer cases from your own practice and guidance during implementation. Get in touch for a proposal.
Sales Excellence focuses on winning new customers. Customer Success is about retaining and growing existing customers: from customers to fans. Together they form one method for commercial growth.
Start today.
Genuine & relaxed.
Higher customer satisfaction, more retention and customers who become ambassadors. Without sales pressure.