When I was five, I joined a club, 'Excelsior', the club of Kralingen, in the first division. I was always training. On a free afternoon, I did individual work with Aad Putters, my youth trainer. Not with the idea growing to be a star, but for fun.

Playing for a Champions League place is not enough. It is not my target, but it is a target we have to take.

I always want to win, and it was time to win some club prizes, some titles. I never would have gone for the money, but wanted the chance to get a bit further in my career. And it turned out to be the right decision.

I don't mind if my performances get dissected and people criticise what I've done on the pitch. They can talk about my game 24/7 for all I care. And a lot of those opinions and criticisms may actually be right. So I don't mind that.

I chose to pursue a career in physics because there the truth isn't so easily bent.

A work-only zone does wonders for your productivity. So, I prefer working at the office now. I spend 8 focused hours there, then I go home to be present with my family.

I was told to avoid the business all together because of the rejection. People would say to me, 'Don't you want to have a normal job and a normal family?' I guess that would be good advice for some people, but I wanted to act.

Over the course of my 13-year career, I've had a lot of concussions, and yet, because I'm no longer competing or suffering from concussion symptoms, I felt like I was in the clear. The reality, though, is that I get concussions far more easily, and my symptoms last far longer than ever before.