The best advice I ever received? Simple: Have no regrets.

I believe a good leader brings out the best in people by listening to them, trusting in them, believing in them, respecting them and letting them have a go.

First and foremost, any business proposal I like must sound fun.

You need lucky breaks to be successful.

From the first days of my career as an entrepreneur, I have always used my own and my team's lack of experience to our advantage. In fact, at our first venture, Student magazine, we used our newcomer status to secure great interviews and generate publicity - people were excited about our new project and wanted to get involved. Our inexperience fed our restless enthusiasm for trying new things, which became part of our core mission.

Surprisingly, a large number of people who fell out with their partners contacted us, saying that they would love to fly on a Virgle spaceship. But out of April Fools' jokes come real things, and I wouldn't be surprised, within the next 50 years, [if] there are one-way trips heading out into space with people on it. It would be very exciting.

I've never sued anybody, though there have been one or two occasions I've wanted to strangle one or two people.