It's worth writing it down. And it's worth writing it down a score or more of times.
Why write it down? To see if you know...To see how specific you are...
Why a score or more of times? That process begins to push past 'just writing it down for the sake of it'. It helps question...is this really what I want?
It's what pages 1-3 of a brand new moleskine notebook is for; the implications of that process will fill the rest.