I believe that one of my larger inner struggles for the next decade or so will be "burnout." Creativity always seems to come in fits and bursts. The absence of creativity often causes confusion and the lacking of a sense of direction. While most look at burnout as to simply become tired, cynical or defensive, I liken it more to writer's block. It grabs hold suddenly, dousing that inner flame that drives some to thrive on any challenge thrown their way. While I generally hold that my metaphorical flame does not burn all that bright to begin with, the side effects of feeling creatively drained are unmistakable.
You can probably tell by this site that my breed of creativity does not necessarily include graphic design. But even approaching an otherwise analytical task requires a certain bit of creative spark as there is always more than one way to solve a problem. One interesting observation is that the onset of burnout does not necessarily have roots in things happening around me. A bad day at work, lousy weather or car trouble can do little to demoralize my inner drive. Burnout strikes without warning, even when when everything else seems to be going just fine.
Perhaps it is merely the mind reseting itself in order to be more accommodating to the endless number of things going through your head when hitting on all creative cylinders. Whatever the reason, I know that I feel the most comfortable when there is not this nagging sensation of writer's block.