One mistake, your winning streak is over and you've got to start over again. But you have to be optimistic in life, and I find that it's also beautiful, because if things are too predictable, that sucks, too, right?

I'm just cruising, doing me, having a good time and focusing on getting better.

I heard there was a debate about fighting teammates, and if a fight should happen because the fans or promoter wants it, I will fight a teammate, but family is ridiculous.

As a fighter, you need to constantly improve. So that's what we've been doing: constantly improving striking, grappling, wrestling - there's always different aspects to improve.

I have stated many times that one of my goals was to become K-1 champion. K-1 is, in our country Holland, very popular, and it's a big opportunity to become the first person that holds two world titles in two different sports.

My brother has the potential to become one of the top guys within Strikeforce. He had a very busy personal life; therefore, he wasn't training as hard as he should, but if he's going to pick up his training, he will be a danger for every fighter.

I've always been a fighter and always competitive.

I wanted to join the Army, but my eyesight wasn't good, so I quit school and my job to just focus on fighting. I didn't want to just get deployed. I wanted to get in on the action.

I do believe that Brock Lesnar will be coming back. I don't want to call it from retirement, but he is a huge draw, big guy, sells tickets. So that's a fight I would be interested in.

The UFC are doing a tremendous job of promoting the sport worldwide. The views about the sport haven't always been so positive here in the Holland, but it's nice to see change and to see the UFC come to Holland, and everyone been really enthusiastic about it.

I moved to the States, and that was a big thing for me. I moved to Miami, and I joined the Blackzilians. For me at the time, it seemed like the best logical solution, but sometimes surrounding yourself with new people is not good.

Brock Lesnar was a big guy: he's at 280 when he fights. When fighting him, you can have a bit of that extra muscle because you don't want to be thrown around like you're nothing.

If I lose to Frank Mir, I have to find something else to do.