Change up the bed itself
Remember that advice about having a good relationship with your bed? Well, negative associations between you and your bed may be eliminated if you sleep in a different bed. Makes sense, but while this sounds exciting and all, buying a new bed or moving to a new house is likely out of the question every time you experience insomnia.
Instead, you can do a few things to change up your own sleep area to break that association, whether it's rearranging your room, getting a new comforter, switching the side you sleep on, or getting a new pillowcase. Change it up, sleep better.