I had a time limit of twelve days. It helped a lot to force me to just write. It let me be absolute brutal with which choices I pruned off. It was great.
Link to the game: https://forum.choiceofgames.com/t/julia-caesar-and-the-great-fire-of-rome
Link to an article I wrote just after finishing it: https://www.dropbox.com/s/1vxrbb58674k2sf/howIwrotejulia.txt
I say think small. If you’re getting overwhelmed think even smaller. Try and create a tree not a bush. Go have a look at Choice of the Dragon and see how it’s done.
Read the article on the blog on vignettes. https://www.choiceofgames.com/2010/07/four-ways-to-write-a-vignette/ Actually read all the really old articles on the blog about game creation, they’re extremely helpful.