This is actually one of the better articles I've ever read on how to encourage creativity and spark. Of course, your mileage may vary, but rarely is there ever an article that both gives specific, easily-achieved actions as well as room for personal interpretation. I wish it were a little longer and contained a bit more science or explanations as to why this works for the author, but oh well.
Here is the exercise/thought-process:
Is this similar to what you do, creative folks? Or does something different work better for you? I find when I can get into the rhythm (or "wave" as he calls it), I am feeling my most satisfied creatively. More often than not, life interrupts though.
Rule: Always get out of bed and write that thought down. You know the one. The brilliant one.