A few years ago I wrote two versions of my obituary, the one I wanted and the one I was heading for. They were very different. I realized I needed to make some big changes if I was going to look back and be proud of my life. I am making those changes, and now I have a life worth living.

Be mindful of the link between present action and desired future outcome. Ask yourself: if I repeat today’s actions 365 times, will I be where I want to be in a year?

Like riding a bike for the first time, sometimes you just have to go for it. If you keep looking forwards and maintain your momentum, it will probably go well. But if you start to doubt yourself and look back, you are more likely to suffer a major wobble followed by a crash.

I am a rolling stone, never in one place for very long.

I have learned to acknowledge and appreciate the 98% that I have achieved instead of the 2% that I didn't.

So let's raise the tone of the debate. Too often at the moment we look like schoolchildren squabbling over a toy - our most precious toy, the Earth. And the danger is that as we pull in opposite directions in our global tug of war, the Earth will end up broken - or at least unable to sustain human life. That is the worst case scenario - or maybe, from the Earth's point of view, the best.

It's amazing how resourceful you can become when you're in the middle of the ocean and there's only one way to get to the other side.