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.

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

My advice is don't keep asking yourself if you can do something. Just get out there and do it. You can really surprise yourself.

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.

I'm not claiming to be anything out of the ordinary. I am not especially big or strong or brave or intrepid.

When you stand at the bottom of the mountain and look up at the mountaintop, the path looks hard and stony, and the top is obscured by clouds. But when you reach the top and you look down, you realize that there are a thousand paths that could have brought you to that place.

"Stepping outside your comfort zone is supposed to feel uncomfortable because we're in new and unfamiliar territory. Being uncomfortable is a sign of success, NOT of failure! So if we are uncomfortably outside our comfort zones, then than means we are growing!!! And THAT is cause for celebration!" (modified from a passage in Roz Savage's "Rowing the Atlantic")