Check out episode #533 of This American Life, “It’s Not the Product, It’s the Person”
“Starting a business is not for the self-doubting. Or even usually the self-deprecating. The first thing you have to sell is yourself —like dating, but with a greater chance of landing in debt. We have a new story from Mike Birbiglia, and Alex Blumberg tells the incredible, sweat-stains-and-all saga of a man fumbling through starting a new business, and the man is: himself.”
https://blog.rememberlenny.com/2014/09/10/check-out-episode-533-of-this-american-life/