I don't fight the insomnia when I'm overtired. I still go to bed, and then remind myself that I'm still doing my body and brain the world of good because I'm not overstimulating it.
It may take a while of just calming myself, focusing on making sure my eyes are pointing in the right direction ( if they roll across the other way I know I'm booting up the imagination/thinking part of my brain) but I do drop off.
Soupy, books round here are nearly always ??2 in charity shops.
LR, I gave Mr by eck 4 hours yesterday without the children so he could spend time st his garage so I might claim back an hour today