Wil Wheaton has this to say about creativity:
Stephen King, in his fantastic book On Writing, said that if writers don’t make the time to read, they shouldn’t even attempt to make the time to write. I used to say something similar about actors or anyone who wants to work in the film industry: if you can’t get out to see movies, and if you’re not going to watch TV, you’re going to have a really hard time being creative in those mediums.
Naturally this applies also to photographers. If you want to take better photographs, you have to look at photographs.