Every author dreams of writing a bestseller, but few authors actually reach that goal. Even fewer hit bestseller status decades after they publish a book, but that’s exactly what has happened to Elissa Guralnick and Paul Levitt. Guralnick and Levitt coauthored children’s books when they were younger, but they never saw a dime of profit from them. In fact, Guralnick tells Denver 7 News that every time they published a new book, her husband would …