Take a look at the tab above and, if you like the idea, see what I've been up to. The aim has been to write a short piece, averaged at three a week (more if the spirit moves me) until I have 100. The only rules are to spend no more than 45 minutes on a piece, no agonizing, no revising. You might want to try this yourself.
What does it tell you? What it's told me is that I have more stories hanging around me, waiting to be written, than I'd ever realized. Not all are Major Pieces, not all are entirely perfect, but that's not the point. The point is to notice that there's always more creativity in you than you think.