Cannot think of the character's name. She was the protagonist in the book Scruples. I enjoyed her sort of coming of age, and her power as her business succeeded.. But just for one day.
I would soak in her business acumen in that 24 hour period.
And a second choice would be Meg Murray in the kid's book A Wrinkle in Time. She had a awesome family and had a great adventure. I would get to experience the Tesseract! Fun stuff.
Oh now you got me started--or Deanna Troi on Star Trek TNG--just to experience space travel.