When I sleep best are the nights I forget to be concerned about it. Typically once something important comes up (job interview, date, etc.) I remember what a problem inability to sleep has been for me in the past, how it could ruin it all—then it might be another month or two where I'm unable to "forget," lay awake for hours concerned about being unable to sleep.
My intuition around tracking is that anything big enough to make a real impact you'd already be aware of. The further micro-optimizing feels good mostly 'cause you've opted into thinking in a framework of sleep optimization so it's goal accomplishment in that context, but probably not a big improvement strictly on a physiological basis.
(Or maybe I'm completely wrong and just grumpy I can't find a good solution to my sleep issues :)