Look, if you can indulge in your passion, life will be far more interesting than if you're just working. You'll work harder at it, and you'll know more about it. But first you must go out and educate yourself on whatever it is that you've decided to do - know more about kite-surfing than anyone else. That's where the work comes in. But if you're doing things you're passionate about, that will come naturally.

The most important thing for entrepreneurs is not to be put off by failure.

I was fortunate enough, after many visits to many wonderful, weird people to come across Burt Rutan, who is a genius in the Mojave Desert. And SpaceShipOne was born and had three flights into space that won something called the X Prize. And from there, we're building SpaceShipTwo, which is ... a beautiful spaceship that is very, very, very nearly completed and will be ready from about next Christmas onwards to start taking people into space.

Learn to use your brain power. Critical thinking is the key to creative problem solving in business.

It can be a challenge not to let failure, or negativity from others, prevent you from going after what you believe in and what in your gut you know can work. However it is important to face these challenges head on and give them a go and importantly don't beat yourself up if you fail - just pick yourself up, learn as much as you can from the experience and get on with the next challenge.

Happiness is the secret ingredient for successful businesses. If you have a happy company it will be invincible.

I personally don't believe anything is impossible. With enough determination and effort, almost everything is possible.