Selecting a topic to write on can be a challenge. Choosing poorly can negatively impact the research and writing process. Here are some things to think about:
Note that in the figure above, it is a waste of time to start your research beyond the green boundary of what the profession knows. You just won't have sufficient knowledge to make sense of it. It is also a waste of time to start your research beyond the red boundary of what you know for the same reason. The best place to start your research is on the edge of what you know and expand it out to what the profession generally knows, and then, if you can, press a little beyond that green boundary. Knowledge building is about linking what you know to what you don't know.