Own one idea. Complete it. Map the current model of purchase and usage. Change how it is done so at least some part of the market uses only your product. Extend from that core user to a much broader universe. Describe your concept in a very short, "six-word story" - a la Ernest Hemingway: "For sale: baby shoes, never worn."

Rocket: Eight Lessons to Secure Infinite Growth (ed. McGraw Hill Professional, 2015) - ISBN: 9781259585432