I've found that giving myself a solid hour to wind down helps immensely with slowing my brain down and letting me sleep more peacefully. Sometimes I read, or listen to music, or watch youtube, or have a beer or an edible and just hang with out, or just tidy the house or something. Whatever it is, it's not work, it's not in my office, and it's not hard. I've found I've been sleeping far better because of it.
Even on nights that I work super late on some head scratcher, with a full 12-15 hours at my desk, I still give myself the hour before going to bed.