Lewis Gordon Pugh — British Environmentalist born on December 05, 1969,

Lewis William Gordon Pugh, OIG is an ocean advocate, a maritime lawyer and a pioneer swimmer... (wikipedia)

I learned two basic lessons on Everest. First, just because something has worked in the past does not mean it will work today. Second, different challenges require different mindsets.
The swim at Deception Island was by far the hardest swim I've ever done. Antarctica is a very unforgiving environment. If you don't train properly, you'll die.
When I'm preparing for a swim, I imagine absolutely everything about it: the color of the water, how cold it is, the taste of salt in my mouth. I visualize each and every stroke.
I've been on swims where people have freaked out about sharks. You have to think about something else, otherwise it will absolutely paralyze you. I do math problems, anything.
Climate change is the Everest of all problems, the thorniest challenge facing humankind.