You know, I sometimes ponder if working on the story and details is more necessary than the game itself. Its... technically work, just not direct.
Like for me specifically I never stop evolving the story based on what avenues I can approach in gameplay and then I get anxious thinking "hey good thing I thought about that now instead of later". Repeat ad nauseam.
Incredibly useful trick I just picked up for map making - group them together via "folder" maps. In this example, they're the different countries in my game. This streamlines the process for me a lot, since I get mappers block often from scrolling down to see where [x] map is that I need to work on next.