I’m heading back from one of the best four days of my life. I’ve been staying in New York since Sunday and in that short time I’ve been privileged to finally meet my legendary US editor Linda Marrow and the team at Ballantine Books (Penguin Random House).

When I had just turned 25 and newly arrived in London, my office was in Victoria in the south west of the city. At lunch times, I would walk around Pimlico and Vauxhall, and inevitably find my way by the Random House building on Vauxhall Bri...