It's possible you're referring to a different context:
* "The Book of Life" as a movie: In the 2014 movie "The Book of Life," the main character, Manolo, is a young bullfighter. However, his passion and eventual profession are for music.
* "The Book of Life" as a religious concept: In some religious traditions, "The Book of Life" represents a record of all actions and deeds of a person's life, ultimately determining their fate after death. This doesn't refer to a specific profession.
Could you please clarify what you meant by "profession in the book of life" so I can help you further?