https://www.wired.com/story/he-wanted-unicorn-got-sustainable-business/

Sahil Lavingia published the first chapter of his planned book Building A Billion Dollar Company in 2012. Lavingia, who was 19 at the time, had never built a billion-dollar company. Nor would he.

The title was aspirational, but at the time the goal didn’t seem out of reach. His e-commerce startup Gumroad raised a $7 million of funding led by venture capital firm Kleiner Perkins. "I think I had a bit of an ego problem," Lavingia, now 27, admits. "Hopefully I was realistic about my chances. My thinking was that if it worked, I wanted to have it documented."