J.K. Rowling faced considerable challenges while writing the Harry Potter series. She experienced significant personal hardships, including divorce, financial struggles, and the loss of her mother. Living as a single parent in near poverty while drafting the first book, she encountered numerous rejections from publishers before finally finding success with Bloomsbury. Additionally, Rowling grappled with feelings of self-doubt and pressure as her work gained popularity, but her resilience and dedication to the story ultimately led to the global phenomenon that is Harry Potter.