20. Who would you switch lives for a day with and why?

JK Rowling, Neil Gaiman or Robin Hobb, in the middle of a good writing burst. Because I want to know how it feels to be an established writer, with a good body of work behind me, living comfortably off my writing and delighting in the characters and worlds I've created (I don't doubt it is hard a lot of the time though - which is why I specified it had to be on a good writing day!).