I'm sure you've heard the joke: be careful not to tick off a writer, she might turn you into a character and kill you. It's pretty common for authors to create characters based on people they've run into in their daily lives. Maybe they borrow aspects from them (an interest, a talent, a job) and insert them into new characters in their books. But what about turning yourself into a character? Is it a good idea, or are you running the risk of making the book too personal?