The way I perceive the act of creativity while it happens in me is as a process of forgetting, not a process of creating. The mind is not capable of having zero thoughts, so when you flush whatever is in your head at the moment it creates a sort of vacuum that sucks in a new thought. In my case, that process of forgetting and then sucking in a new thought happens continuously. My memory isn't "sticky," so what comes in slides right back out in a nanosecond. Sometimes a new thought is worth writing down, which I either do right away or lose it forever. Usually the new idea is random garbage and it passes quickly, making room for the next idea. My mind feels like a slot machine that I can't stop pulling. Sometimes the diamonds line up, but not often.