The inspiration side of writing is fairly easy. I get ideas from news items and from e-mails from friends. I make a point of asking myself "Could this turn into a useful article in Suite 101? Could I blog about that feeling? Would Environmental Graffiti readers enjoy learning about the ecological side of that plant or animal"?
Sometimes the perspiration side is not too difficult. Chase down "commercial re-use" images: check. Find two or three reliable sources of information: not usually a problem.
But trying to spin a ghost-writing article for a client can be difficult, especially if we are spinning in different directions.
At those times, I remind myself that this is why it is called "work"...and why clients pay.