In 2014, I published The Author’s Guide to Marketing, a resource for writers who wanted to know how to attract more readers, sell more books, and maybe even enjoy themselves. I had a boatload of experience in book marketing at that point, both from my years as a literary agent and as the director of marketing for an author services company. I’d created and executed marketing plans for hundreds of writers, both fiction and nonfiction.

But what I didn’t have was firsthand experience.