Rowling 'Heartbroken,' 'Euphoric' at 'Potter's' End

"I always knew that Harry's story would end with the seventh book, but saying goodbye has been just as hard as I always knew it would be," she writes.

"Even while I'm mourning, though, I feel an incredible sense of achievement. I can hardly believe that I've finally written the ending I've been planning for so many years. I've never felt such a mixture of extreme emotions in my life, never dreamed I could feel simultaneously heartbroken and euphoric."