Then I shot another roll, of random things, and eventually figured out that I really wanted to do night time photography on tripod, like urban landscapes, and then during the day my passion is to photograph people. Not every single person, but those who I feel connected with.
Eventually things loosen up, and you'll find yourself knee deep in a project again. Keep at it, grab your camera and go shoot. Take those pictures that you think would be boring; the practice will do your photography senses good, and before you know it, the subject matter will come to you.