I'll add that I sometimes listen to recorded books while laying in a darkened room. It often doesn't take long to go from listening to the book to dreaming it!

Doing anything that requires a lot of brain power before bed isn't a good idea.  Try something that requires less brainpower like listening to some soothing music, doing the dishes, folding the laundry or petting the dog. 

You may want to try starting a before bed journal.  Since rampant conscious
thoughts at bedtime can destroy your chances of a good night’s sleep, you may
want to try getting rid of all those nagging thoughts before your head hits the
pillow.  Taking the time to start a
‘before bed’ journal can be very helpful in clearing your mind of all the day’s
activities.  This way, you are
(mentally, at least) able to get rid of all the stresses of the day by putting
them to paper.

Good luck on your journey to ZZZ promised land.