use it in a sentence

I'm always rehearsing conversations in advance and reviewing them in retrospect and when I'm working on a writing project, I'm always writing it in my head, as all my reading and notes get fed into that continual process of composing, but when I have a good idea, I have to write it down the first chance I get, otherwise I might lose it - because an idea can be quite complex, with multiple stages and links, and the short-term memory just can't hold things like that.