Lewis Pugh knows oceans. He was the first to complete a long distance swim in every ocean of the world, and has pioneered more swims around famous landmarks than any other person in history. He swam across the icy waters of the North Pole to highlight the melting of the Arctic sea ice, and across a glacial lake on Mt Everest to draw attention to the impact of climate change on the Himalayan glaciers.In 21 Yaks and a Speedo Lewis shares his ability to dream big dreams, build crack teams, and get the job done. You'll be inspired by his devotion to excellence, his loyalty to his crew, and his belief in never giving up. The principles are simple, but effective. Stick by them, he says, and they'll see you through.Lewis is a vivid storyteller. His efforts to spread awareness of the fragility of our global ecosystem, and the dangers that threaten our oceans, have made him one of the world's most popular public speakers. He's been nicknamed 'the human polar bear' and 'the people's porpoise', and named Young Global Leader by the World Economic Forum. As US President Bill Clinton observed, “Lewis Pugh doesn't tell us what to do, he shows us what can be done.”These are the 21 strategies Lewis used to achieve what no one thought was possible. So now you can too.