What is CBT-I, and why is sleep hygiene not enough?

Most public sleep advice focuses on sleep hygiene: regular bedtime, cool dark room, no screens, less caffeine. These are sensible. They are not a treatment for chronic insomnia, and the evidence on this is consistent. The first-line treatment for chronic insomnia is cognitive behavioural therapy for insomnia, or CBT-I, a multi-component therapy that includes stimulus control, sleep restriction, cognitive restructuring, and relaxation. The component network meta-analysis evidence shows that these components do specific work that sleep hygiene alone does not. If you have tried sleep hygiene and it has not made a meaningful difference, that is consistent with the broader evidence base on what sleep hygiene alone does and does not do.

Written and reviewed by Matthew Hallam, Registered Psychologist (AHPRA PSY0002471369). 4 min read. Published 7 June 2026. Last reviewed 7 June 2026. Next review 7 June 2027.

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Why sleep hygiene alone usually does not work

Most public sleep advice focuses on sleep hygiene. Regular bedtime. Cool, dark room. No screens before bed. Less caffeine, less alcohol. These are sensible recommendations, and they have their place. They are not, however, a treatment for chronic insomnia, and the clinical evidence on this is consistent.

The American Academy of Sleep Medicine's clinical practice guideline (Edinger et al., 2021) gives multi-component CBT-I a strong recommendation as first-line treatment for chronic insomnia. The same guideline explicitly recommends that sleep hygiene not be used as a standalone treatment. This is not because sleep hygiene is wrong. It is because chronic insomnia is maintained by patterns that hygiene alone does not target. A person can have impeccable sleep hygiene and persistent insomnia, because the perpetuating factors are conditioned arousal, cognitive engagement, and beliefs about sleep, none of which are addressed by a darker room.

What CBT-I actually involves

CBT-I is a multi-component therapy with distinct elements, each doing different work. Stimulus control re-narrows what the bed has come to mean, addressing the conditioned arousal that builds up when the bed has been used for everything except sleep. Sleep restriction matches time in bed to actual sleep, rebuilding the relationship between sleep pressure and the bed, and often producing the most rapid changes in sleep consolidation. Cognitive restructuring works with the beliefs that maintain pre-sleep arousal, the "if I do not sleep enough I cannot function" beliefs that raise the stakes of every wakeful moment. Relaxation training reduces autonomic arousal where appropriate. Sleep hygiene sits inside this as one supporting component, not the main intervention.

The treatment is typically delivered across four to eight sessions, in person or digitally, and the gains tend to be durable. Most people who complete CBT-I maintain improvements at six and twelve months, and many continue to improve after treatment ends, because the principles, once internalised, change how the person responds to the inevitable bad nights that come.

The evidence on which components do the work

The 2024 component network meta-analysis (Furukawa et al.) mapped which components of CBT-I actually do the heavy lifting. Cognitive restructuring, sleep restriction, and stimulus control each produced significant effects on insomnia remission. Sleep hygiene as a standalone component showed no measurable benefit, consistent with the AASM guideline position.

Access in Australia is improving. CBT-I is available through individual psychologists, through digital programs (Sweetman et al., 2024, reported a successful Australian community-based randomised controlled trial), and through general practice via the Australasian Sleep Association's primary care resources. The treatment is well-established, the evidence is strong, and the barriers to access are now more about awareness than availability.

If you have tried sleep hygiene and it has not made a meaningful difference, that is consistent with the broader evidence base on what sleep hygiene alone does and does not do. Sleep hygiene is sensible and supportive. It is not, in itself, treatment for chronic insomnia, and the evidence on this has been clear for some years now. The shift from sleep hygiene to CBT-I is the shift from supporting practices to targeted treatment. Both have their place. But for a person with chronic insomnia who has been trying harder at sleep hygiene and seeing no real change, the more useful next step is usually not more hygiene. It is the specific, evidence-based components that target the perpetuating factors directly, in a structured course with a clinician who works with sleep. The evidence supports it. The Australian access is reasonable. The first useful step is the recognition that the right treatment, applied to the right pattern, exists and is available.

This content is general information only. It is not a substitute for individual psychological or medical advice. Reading this does not establish a therapeutic relationship with Equal Psychology or any of their clinicians.