If my mind is racing, I will get up and just write about it until it stops racing. Usually that's when I've made some kind of plan to address what my mind so busy processing.

If I just can't sleep for some unexplained reason, I will get up, bring my duvet to the living room and read comics for a while.

Other than that, I try not to eat too late, and I will usually read in bed. Back when I had my Fitbit it said I averaged about 7h30m sleep a night. I also have a daylight lamp that I use in the morning during the dark half of the year.