'Ive had insomnia for most of my adult life
I find a hot shower/bath about two hours before bedtime helps me.
I've always read at night but the last few years I've given myself permission to read more "fluff". I no longer read the news or about things that might be upsetting before bedtime. Same with TV - told my husband no more History channel, true crime shows, Criminal Minds type shows, etc... If we watch something like the Walking Dead before bedtime, I like to have some sort of "palette cleanser" afterwards.