I had a severe case of not being able to sleep if my mind was busy after dinner time e.g. coding, debugging, mentally solving a problem. Adjusting light temperature, using flux software etc. helped marginally, but never attacked the root of the problem. What really helped was meditation i.e. being able to take my mind away from everything & focus on /dev/null. It is like a magic button. I can fall asleep whenever I consciously wish to divert my attention. Just a single book & a month of practice.
Next challenge : Wake up whenever I feel like. Haven't found the magic button yet. All the fancy alarm clocks, sleep trackers, REM techniques aren't helping.
Next challenge : Wake up whenever I feel like. Haven't found the magic button yet. All the fancy alarm clocks, sleep trackers, REM techniques aren't helping.