My best life lessons and education didn't come from a classroom - they've come from the wild. How you act in the big moments, the ones that challenge you, scare you, tempt you, and force you to make the right decisions, is what defines you.

To get ready to climb Everest, I did a lot of hill running with a daypack on and a lot of underwater swimming. I would swim a couple of lengths underwater and then a couple above. It gets your body going with limited oxygen.

Survival requires us to leave our prejudices at home. It's about doing whatever it takes - and ultimately those with the biggest heart will win.

My best life lessons and education didn't come from a classroom - they've come from the wild. How you act in the big moments, the ones that challenge you, scare you, tempt you, and force you to make the right decisions, is what defines you.

Both faith and fear may sail into your harbor, but only allow faith to drop anchor.

I learnt another valuable lesson that night: listen to the quiet voice inside. Intuition is the noise of the mind.

All worthwhile journeys have big obstacles. It's the way of the world. The rewards go to those who can push through those trying moments and still manage to keep a smile on their face.