I was um-ing and ah-ing about where to post this, and settled for general writing, because it is quite a broad question. Previously my wip was a straight forward 1st person narrative, but I got stuck, and now I'm considering adding sub-plots, firstly it would do wonders for my word count, but also I think it would help with character development of the minor roles (ie all the characters who are not my mc), and also my plot development, adding tensions, and complications. However, it comes with its own obstacles, I would have to write out of 1st person or make it clear that I'm no longer with my mc. I also want my sub-plots to add something to the story. The film 'mister lonely' springs to mind, as this has a sub plot, that is so much better than the rest of the film, and really adds nothing to the main film. Another example would be 'ice age' the sabre toothed squirrel story is so much more involving than the main plot, and they don't really add anything to each other. I like to hear thoughts and feedback, or how you approach your own sub-plot elements, that might be able to inspire me how I may improve my focus.