Before attempting lucid dreaming, I used to remember at least a dream every other night. I ended up remembering most of my dreams. I never wrote them down. Now I have a dream journal, and since starting it most of my entries have been blank, because I haven't been able to remember any. That, and I wake up with my cat meowing at me incessantly, so whatever I'm thinking about is washed away from the habit to feed my cat...

If you haven't, try making a dream journal. When you wake up, stay still and close your eyes and think about anything you can remember about the dream-- a picture, a word, a character, object, scene.. and write that down.
I had an instant when I couldn't remember anything, then I went online and saw a certain word and it triggered the rest of my dream to come back. xD