Grinding It Out by Ray Kroc. If you watched The Founder, hidden gem with an incredible performance by Michael Keaton, you know good parts of the story despite the fact that the movie makes Kroc too much of a villain. This is Kroc’s version of the story - somewhat more credible than the movie - and the story of a man that never gave in to failure. At 50+, and after many failures, he finally found the vision and the product that ultimately would lead to his success. As he mentions, he was “an overnight success, thirty years in the making.” Definitely an interesting book that was a pleasure to read. Obviously, like many books like this one, it is sometimes self-serving, but this does not detract from the enjoyement of the book overall.
If you don’t want to read the book, I strongly suggest that you watch the movie.
You might like Fast Food Nation by Eric Schlosser, too. It covers Ray Kroc's early dealings with the McDonald Brothers and the growth of the entire industry.