Insomnia means difficulty falling asleep, staying asleep or obtaining satisfying sleep despite having a reasonable opportunity to sleep. When it affects daytime life, the useful next step is to understand the pattern and discuss appropriate care. Sleep habits can help; persistent insomnia also has specific treatments.
This guide focuses on adults. Children and teenagers need age-appropriate assessment and guidance. For adults with long-term insomnia, cognitive behavioral therapy for insomnia, or CBT-I, is usually the first treatment recommended in NHLBI guidance.
Separate lack of opportunity from difficulty sleeping
A schedule allowing only a short time in bed can leave someone sleep deprived even if falling asleep is easy. Another person may reserve enough time yet spend much of it awake. These situations call for different questions, and both can occur together.
Short-term insomnia may follow stress or a change in routine. The chronic pattern generally involves difficulty on at least three nights a week for at least three months, with an assessment of the wider circumstances. You can seek help earlier when daytime functioning or safety is affected. See NHLBI's explanation of insomnia.
Describe whether the main problem is falling asleep, repeated awakenings, waking earlier than intended or feeling poorly restored. Also describe the day: do you feel sleepy enough to doze, physically exhausted, worried about the coming night, or some combination?
Use a diary to make the conversation concrete
NHLBI suggests a sleep diary for one to two weeks before assessment. Record approximate times rather than repeatedly checking the clock overnight. Include workdays and days off so a clinician can see how the schedule changes. The diagnosis guide also describes questions about medicines, health, snoring and breathing during sleep.
Download the adult sleep diary (plain text). Open it in a text editor or copy the daily block into a notes app. It contains no sleep-restriction formula or automated advice. Keep the completed record private and share it with your clinician as you choose.
Swipe the table sideways, or focus it and use the arrow keys.
| Record | How to write it | What it helps clarify |
|---|---|---|
| Sleep opportunity | Time you tried to sleep, final waking and getting-up time; include AM/PM or use 24-hour time. | The time available compared with the time you think you slept. |
| Time awake | Estimated minutes to fall asleep and total minutes awake after falling asleep. | The kind of difficulty and how it varies. |
| Daytime sleep | Nap times and approximate duration; note unplanned dozing. | Daytime sleepiness and schedule patterns. |
| Context | Caffeine, alcohol, medicines, pain, shift times and other relevant changes. | Questions about timing or other contributors. |
| Daytime effect | A short description of alertness and one affected activity. | The practical impact beyond a number of hours. |
Make the sleep opportunity more workable
Start with practical barriers you can change: noise, uncomfortable temperature, late tasks or an unpredictable schedule. A reasonably consistent routine, a quiet wind-down period and a dark, comfortable sleeping space can support sleep. Consider the timing of caffeine, nicotine and alcohol; alcohol can make later sleep more disrupted. NHLBI's healthy-sleep guidance explains these habits.
Choose a manageable change and note what happened. For example, moving a recurring late-night household task to earlier in the evening may protect the time already intended for sleep. If caregiving, housing, pain or shift work constrains your options, describe that barrier during the appointment. Advice needs to fit the conditions in which you actually live.
A checklist of habits is not the whole treatment for persistent insomnia. If substantial difficulty continues, bring the diary and ask specifically about CBT-I or a sleep assessment.
What CBT-I adds
CBT-I combines several methods: reducing sleep-related worry, building an association between bed and sleep, relaxation, sleep education and a carefully adjusted schedule. It commonly takes place over several weeks and can be delivered in person or through suitable remote care. The objective is a more reliable pattern of sleep and better daytime functioning.
Some CBT-I programs adjust time in bed using a clinician-guided method often called sleep restriction or sleep compression. Do not create your own severe sleep restriction from an internet example. Ask how the approach will account for your medical history, daytime sleepiness, work and driving responsibilities. Ask who reviews progress and what to do if sleepiness or other symptoms worsen.
When evaluating a service, ask: Is this a full CBT-I program or only sleep tips? Who provides it? What information do they review before starting? What support is available between sessions? How are personal sleep records handled?
Bring medicines and other symptoms into the discussion
Tell the clinician about loud snoring, waking gasping, unusual sensations in the legs, pain, mood changes and unplanned daytime sleep. These observations may lead to assessment for additional sleep or medical conditions. A diary supports that assessment; it cannot settle the diagnosis by itself.
Prescription sleep medicines, over-the-counter products and supplements have different benefits and risks. Ask why a product is being considered, how long it should be used, how it affects next-day alertness, and how it interacts with other substances. Review the full list with a clinician or pharmacist. A familiar or “natural” product still needs that review.
If you are drowsy, avoid driving; if sleepiness develops while driving, stop in a safe place and arrange a safer way to continue. NHTSA's drowsy-driving guidance explains why caffeine alone is an unreliable safeguard.
For the broader question of getting enough sleep, read sleep deprivation and practical next steps. For ongoing fatigue with worsening after effort, read the ME/CFS symptom-pattern guide and discuss the pattern with a clinician.
Sources and related reading
Sources are linked beside the relevant explanations. Information checked October 7, 2026. This educational guide supports a conversation with a qualified healthcare professional.