BBC News interviews Zappos founder Nick Swinmurn, who recounts the tale of how Zappos got its start. His key advice? As BBC News sums it up: "You must force yourself to stay focussed on your idea - don't let yourself get distracted."
Says Nick: "The key is being scrappy. It's the guys that they see an idea and they don't know how they're going do it but they're going to try everything and just fight and claw and keep adapting, keep trying things." Watch the video »