I am writing one story and one story only, I tell myself, and have already foisted one spinoff upon my original Beta as it is. One story only. I tell myself this, while barely holding back an additional spinoff and two in-universe pieces of media that are desperately attempting to wriggle their way through my hands and onto my keyboard.
Something I'm trying is just x number of words a day. To build a writing habit/practice and to flesh stuff out so that I know what I need to build in the preceding scenes.