"His enthusiasm and knowledge combined with a sparkling presentation made my head spin. Sjoerd makes the difference in changing mindsets. Sjoerd spoke for our board - confrontational and direct, but always with respect. He flipped the switch!"

"Sjoerd is an ambitious man who has helped our organization. He only wants the best and combines that with a very modern critical and direct attitude, where he does not mince his words. Qualities that I find very valuable in a business environment."

"Sjoerd demonstrates insight into the subject matter and knowledge of the subject. In addition, his presentation is clearly structured and he does his best to have everyone actively participate. This allows the participants to come up with the right answers themselves and learn as much as possible. In short: Professional, educational, clear and distinct."

"Sjoerd grabbed me with his energetic attitude. During his presentation I saw his dedication, willpower and discipline. His ability to associate flashingly fast is valuable to his participants."

"With a good and understandable story he can quickly convey a lot of valuable information. I learned a lot in a short time and I can recommend him to everyone!"