As a long-time insomniac I have found that the best way to deal with it is not to expect to get to sleep early, but to make just being in bed as inviting as I can.
A hot bath with bath oil, a warm bed (electric blanket in winter) in a cool room so it feels comforting, and pillow spray make going to bed feel lovely, and I play soft music for a while (I have sleep headphones) or listen to Rain Rain, which is a free app that lets you mix various rain and storm recordings. I listen to that through a speaker, and it makes me feel warm and cozy listening to what seems like rain outside while I am warm and dry in bed.
I do find that the routine of all this helps me to nod off faster than I used to, but as I say, forgetting to care really helps - part of the problem was the feeling that I 'should' be asleep.