You're in a time machine and land back in 1947. You'll need a job. Consider librarianship!
We have a documentary in our collection, The Hollywood Librarian: A Look at Librarians through Film [DVD 791.436 HOL], if you found the above film interesting.
One of my favorite films with a librarian as a main character is Foul Play with Goldie Hawn and Chevy Chase, sadly, it is out of print.
For kids interested in what goes on in libraries, borrow Katie Marsico's Working at the Library [J 027 MAR].
Things have changed a lot in the library biz over the past 64 years. Today's librarian requires a completely new level of education and interest--liking to read, though, is always going to be a benefit!
Film courtesy Internet Archive.