Having cycled 9,000 miles to India, raised $550,000 for victims of the Boston Marathon bombings and been voted as one of the top 100 happiest people in the UK, Danny Bent's perfectly placed to impart some positivity on the podcast. On a walk through Brockwell Park to the summit of Lambeth – Westow Hill, by Crystal Palace Park – we talk happiness, adventure and life-changing near-death experiences