Do you find it difficult to fall asleep, stay asleep, or wake feeling unrefreshed?

Most people experience sleep difficulties at some point in their lives, often due to stress, anxiety, or physical health concerns. However, when sleep disruption becomes persistent and lasts longer than a month, it may be diagnosed as insomnia.

Insomnia can significantly affect mood, concentration, energy levels, and overall wellbeing. Identifying the underlying cause is essential for effective treatment.

A GP assessment is the first step to rule out medical causes. When sleep difficulties are linked to psychological factors such as stress, worry, or low mood, referral to a psychologist for Cognitive Behavioural Therapy for Insomnia (CBT-I) is often recommended.

This article explores:

• Why insomnia develops and what maintains it
• Evidence-based CBT strategies for sleep problems
• Practical sleep hygiene techniques
• When to seek professional help

What Causes Insomnia and Sleep Problems?

Sleep difficulties are often maintained by a combination of:

• Psychological factors (stress, anxiety, depression, worry)
• Physiological arousal (tension, hyper-alertness)
• Unhelpful sleep habits and routines

Common behaviours that can worsen insomnia include:

• Irregular sleep schedules
• Excessive caffeine or alcohol consumption
• Long or late daytime naps
• Spending too much time awake in bed

Over time, the brain can begin to associate the bed with wakefulness and frustration rather than rest.

CBT for Insomnia (CBT-I): First-Line Treatment

Cognitive Behavioural Therapy for Insomnia (CBT-I) is widely recommended as the first-line psychological treatment for insomnia by organisations such as the Australasian Sleep Association.

CBT-I is an evidence-based approach that targets:

• Unhelpful thoughts about sleep
• Heightened worry and tension
• Behavioural patterns that disrupt sleep

It may include:

• Psychoeducation about sleep
• Cognitive restructuring (changing unhelpful thoughts)
• Behavioural strategies (sleep restriction and stimulus control)
• Relaxation and mindfulness techniques

CBT Strategy 1: Challenge Unhelpful Sleep Thoughts

Insomnia is often maintained by a “vicious cycle” of anxious thinking and poor sleep.

For example:

“If I don’t get 8 hours sleep, I won’t cope tomorrow.”

This creates anxiety, which increases physical arousal and makes sleep harder.

Helpful cognitive strategies include:

• Stay present: avoid predicting future sleep outcomes
• Keep perspective: tiredness does not mean failure or catastrophe
• Avoid all-or-nothing thinking: “I sleep poorly sometimes, but not always”
• Focus on evidence: “My body can still function with some rest”
• Reduce overgeneralisation: “One bad night does not define my sleep”

Additional CBT Strategies for Insomnia

2. Thought diaries

Record and challenge sleep-related worries to reduce their intensity over time.

3. Normalise sleep difficulties

Sleep disruption is common during stress and does not mean something is “wrong”.

4. Letting go techniques

Write worries down before bed to reduce mental load and postpone problem-solving until the next day.

5. Distraction techniques

Engage in calming, non-stimulating activities such as reading or puzzles.

6. Mindfulness practices

Guided mindfulness or breathing exercises can reduce physiological arousal. Apps such as Smiling Mind may be helpful.

Sleep Behaviour Strategies

7. Sleep restriction therapy

Sleep restriction helps reset the sleep-wake cycle by limiting time in bed to actual sleep time.

Key principles:

• Only go to bed when sleepy
• If awake for ~20 minutes, get up briefly
• Avoid staying in bed while awake or frustrated

This helps retrain the brain to associate bed with sleep.

8. Sleep hygiene improvements

Good sleep hygiene supports healthy sleep patterns:

• Avoid caffeine, alcohol, and heavy meals 3 hours before bed
• Limit vigorous exercise close to bedtime
• Avoid daytime naps (or limit to 20–30 minutes)
• Maintain consistent sleep and wake times
• Reduce screen exposure before bed
• Keep bedroom cool, dark, and comfortable
• Avoid clock-watching during the night

9. Light exposure therapy

Light plays a key role in regulating the circadian rhythm (your body’s internal clock).

Helpful strategies:

• Get natural sunlight shortly after waking
• Keep curtains slightly open to allow morning light
• Increase daytime light exposure to strengthen sleep-wake regulation

When to Seek Professional Help for Insomnia

You may benefit from professional support if:

• Sleep difficulties persist for more than a month
• Insomnia is affecting daily functioning or mood
• You feel anxious or distressed about sleep
• Self-help strategies have not been effective

A GP can rule out medical causes and refer you for CBT-I with a psychologist if appropriate.

How a Psychologist Can Help with Sleep Problems

A psychologist trained in CBT-I can help you to:

• Identify and change unhelpful sleep beliefs
• Reduce sleep-related anxiety and worry
• Establish healthy sleep routines
• Improve sleep efficiency and consistency
• Build long-term sustainable sleep habits

CBT-I is a structured, evidence-based approach designed to improve both sleep quality and confidence around sleep.

Call to Action

If you are struggling with ongoing sleep difficulties, support is available.

To get started:

• Speak with your GP for a sleep assessment
• Download our Referral Fact Sheet
• Request a referral to CBT Professionals

Our clinicians can help you rebuild healthy, restorative sleep patterns using evidence-based CBT techniques.

FAQ: Insomnia and Sleep Problems

What is insomnia?

Insomnia is a sleep disorder characterised by difficulty falling asleep, staying asleep, or waking too early, affecting daily functioning.

What causes insomnia?

Common causes include stress, anxiety, depression, poor sleep habits, and heightened physiological arousal.

Can CBT help with insomnia?

Yes. CBT-I is a highly effective, evidence-based treatment for insomnia and is recommended as a first-line intervention.

How long does insomnia last?

It varies. Some people experience short-term insomnia, while others develop chronic symptoms lasting months or longer.

What is sleep hygiene?

Sleep hygiene refers to habits and environmental factors that support healthy sleep, such as consistent routines and reducing stimulants.

When should I see a doctor for sleep problems?

If sleep difficulties persist for more than a few weeks or affect your daily life, you should seek medical advice.