I am hard-at work on one book in a series, but have millions of ideas for new books floating around in my head, some that I am lucky enough to have gotten down on paper. A make a list of books, short stories and novellas I want to write along with there descriptions. There's nothing more satisfying then crossing one of the list when I complete it (though I am a beginning novelist and that has only happened once before ) I hope to write 40 novels and novellas before I retire.