But how do this on the fly if you are telling somebody about a work project or some idea you have been tinkering about in your free time? Or when they are picki

But how do this on the fly if you are telling somebody about a work project or some idea you have been tinkering about in your free time? Or when they are picking some random time in your life ("how was highschool for you?"). I have read quite a few books and a bunch of videos on YouTube but they always focus on prepared story telling.