Sleep hygiene advice has a reputation problem: everyone has heard it, and almost nobody keeps doing it. Dim the lights, skip the late coffee, keep a consistent bedtime — none of it is wrong, exactly, but a list of rules isn't a routine, and a routine that only survives a good week isn't much use during a bad one.
The articles in this topic are less about what to do and more about how to make it stick — the smallest version of a habit that's still worth doing, the cue that makes it automatic instead of effortful, and where habits like these fit alongside the structured, physician-designed work of an actual CBT-I program. They're a complement to that work, not a substitute for it.