Spend time with your characters.  Go for a walk.  Wake them early and ask a few questions, maybe using the Proust Questionnaire here http://en.wikipedia.org/wiki/Proust_Q..., or find out what they dreamed about.  Take them to a party or the supermarket, or watch children play, if you dare.  Look at the world through their eyes and find out what or who makes them tick.  Then let them loose on the white page….