Make a point of doing creative things. Even if your specialization is writing reference articles about dry subjects it does not mean that you aren't doing something creative. You have to allow yourself some time to recharge your creative batteries, and heading off to an art museum, botanical garden, or even a crowded subway station to observe other people can be a fantastic way to get your creative juices flowing again. All work and no play will make you one dull writer, an no matter what you are writing about you really need to make time to do something other than writing. It can be especially difficult to lure yourself away from writing when you first start getting jobs and bringing in some money because the process can be quite alluring. You still need to make time to refresh your creative juices. Allow yourself the time you need to occasionally get away from writing so you can ultimately be a better writer.