I've only suffered writer's block badly once, and that was during the writing of Chamber of Secrets. I had my first burst of publicity about the first book and it paralysed me. I was scared the second book wouldn't measure up, but I got through it!
J. K. RowlingI heard from my dear friend Tiberius Ogden, that you can produce a Patronus? For a bonus point...? Harry raised his wand, looked directly at Umbridge, and imagined her being sacked. Expecto Patronum! The silver stag erupted from the end of his wand and cantered the length of the hall.
J. K. Rowling