As a writer who started his first novel between assignments (essentially the summer) I accidentally stumbled upon the things you’ve mentioned. These aren’t new. They exist in all the biographies of every novelist ever written about (check out Carlos Baker’s Hemingway). My only additional advice is to realize how much work in involved (writing and getting published). My agent wrote me recently, saying that there are 650,000 new titles each year compared to 13,000 per ten years ago. That’s a lot of competition, and it takes more than endurance and a subject people want to read. It takes grit and I doubt there are nearly as many “best-selling authors” as I hear about, myself included. Best of luck, anyway. Nice piece.