Trouble Falling Asleep? Common Reasons and What Helps

Trouble falling asleep usually happens when your mind or body is still in "daytime mode" at bedtime. The most common reasons are stress and worry, low mood, caffeine or alcohol, an irregular schedule, a body clock that runs late, and some medicines or health conditions. Most causes can be narrowed down with a two-week sleep diary and a few targeted changes.

This guide is for adults and older teens who lie awake for a long time after turning off the lights, and for parents or partners trying to understand what is going on. If you fall asleep easily but wake up too early, some of this still applies, but the causes can differ.

Why can't I fall asleep even when I'm tired?

You can feel exhausted and still not fall asleep because tiredness and the ability to switch off are not the same thing. Sleep needs a calm nervous system and the right timing from your body clock. If either is off, you may feel drained but wide awake in bed.

MedlinePlus, the National Library of Medicine's consumer health site, lists stress, medical conditions, medicines, other sleep disorders, and caffeine, tobacco and alcohol among the common causes of insomnia. It also notes that treating the underlying problem, when there is one, is often part of the answer.

Is stress or anxiety keeping me awake?

Stress and anxiety are among the most common reasons people lie awake at night. When the day finally goes quiet, unfinished worries tend to get louder. Your body may respond with a faster heartbeat, muscle tension or a sense of being "on alert."

The American Academy of Sleep Medicine (AASM) notes that worry often feels worse at night and is closely tied to insomnia. Over time, some people also start to worry about sleep itself, which adds a second layer of alertness at bedtime. Our article on anxiety-related insomnia goes deeper into that cycle.

Can depression make it hard to fall asleep?

Yes, depression can make it hard to fall asleep, even though people often picture it as sleeping too much. Low mood can come with restlessness, rumination and an uneasy feeling at night. Others with depression wake too early or sleep longer but feel unrefreshed.

The AASM describes depression as a frequent cause of insomnia. If your sleep problems arrived along with sadness, loss of interest, hopelessness or changes in appetite, mention both to a clinician. Treating mood and sleep together tends to make more sense than treating sleep alone.

What everyday habits make it harder to fall asleep?

Everyday habits that make it harder to fall asleep include caffeine late in the day, alcohol near bedtime, irregular sleep and wake times, long late naps, heavy meals at night and bright screens right before bed. Each one can push your body away from sleep in a different way.

The Centers for Disease Control and Prevention (CDC) says adults ages 18 to 60 need seven or more hours of sleep, and advises a consistent schedule, avoiding large meals and alcohol before bed, avoiding caffeine in the afternoon and evening, and turning off screens about 30 minutes before bed. MedlinePlus adds that daytime sunlight and avoiding naps after 3 p.m. can help.

Could my body clock be the problem?

Your body clock can be the problem if you fall asleep easily at a later hour but not at the time you are "supposed" to. This is common in teens, people who work evenings or shifts, and anyone whose weekends run much later than weekdays.

The National Heart, Lung, and Blood Institute (NHLBI) describes circadian rhythm disorders as problems that occur when the body clock is out of sync with your environment. A clue is that you sleep well when you can follow your own timing. A clinician can help you tell timing problems apart from insomnia.

Can medicines or health conditions cause trouble falling asleep?

Medicines and health conditions can cause trouble falling asleep. Some prescription drugs, cold and allergy products, pain, reflux, breathing problems and frequent nighttime urination can all interfere with settling down. MedlinePlus lists both medical conditions and medicines among causes of insomnia.

Do not stop or change a prescribed medicine on your own because of sleep. Instead, bring a full list of what you take, including over-the-counter products and supplements, to your prescriber or pharmacist and ask whether timing or a change could help.

How can I figure out why I can't fall asleep? A step-by-step plan

You can figure out why you can't fall asleep by tracking your pattern for two weeks and changing one thing at a time. The AASM recommends a sleep diary that covers two weeks and records caffeine, alcohol, exercise, naps, medicines and the type of day you had.

1. Keep a two-week sleep diary. Note bedtime, roughly how long it took to fall asleep, wake time, naps, caffeine, alcohol and stress level.
2. Fix your wake time first. Get up at the same time every day, including weekends, even after a rough night.
3. Move caffeine earlier. Try stopping caffeine by early afternoon for two weeks and compare.
4. Build a 30-minute wind-down. Lower the lights, put screens away and do something calm.
5. Write down worries earlier in the evening. Spend ten minutes listing worries and one next step for each, well before bed.
6. Get up if you are not asleep after about 20 minutes. Do something quiet in dim light and return when sleepy, as MedlinePlus suggests.
7. Review the diary. Look for links between late caffeine, stressful days, alcohol, naps or late weekends and slow sleep onset.

Example: a hypothetical person notices from their diary that slow nights follow late-afternoon coffee and stressful work email after 9 p.m. Changing those two habits gives them a clear test rather than guesswork.

What should I tell a clinician about my sleep? A checklist

When you see a clinician, bring specific information rather than "I sleep badly." A short checklist makes the visit more useful:

• How long the problem has lasted and how many nights a week it happens
• Roughly how long it takes to fall asleep and whether you wake during the night
• Your usual bed and wake times on workdays and days off
• Caffeine, alcohol, nicotine and other substances, with timing
• All medicines and supplements, with when you take them
• Mood, worry, stress and any recent life changes
• Snoring, gasping or restless legs, if a bed partner has noticed them
• How poor sleep affects your day: mood, focus, driving or work

You might say: "For the last two months it has taken me over an hour to fall asleep most nights, and I'm worrying more during the day. I brought my sleep diary." The AASM notes that a sleep study is usually only needed when sleep apnea or another sleep disorder is suspected.

When is trouble falling asleep a reason to get help sooner?

Trouble falling asleep is a reason to get help sooner when it comes with other warning signs, lasts for months, or is affecting your safety. The AASM describes chronic insomnia as trouble at least three times a week for at least three months, but you do not have to wait that long to ask for help.

Reach out sooner if you notice:

• Low mood, hopelessness or loss of interest along with poor sleep
• Several nights in a row with very little sleep plus unusual energy, racing ideas or risky behavior
• Drowsiness while driving or at work
• Loud snoring, gasping or pauses in breathing during sleep
• Using alcohol or other substances to get to sleep
• Thoughts of death or self-harm

The AASM recommends cognitive behavioral therapy for insomnia (CBT-I) for chronic insomnia in adults, and notes it can be delivered in person, by video or online.

What should people in Texas know about getting sleep help?

People in Texas can often start with a primary care clinician, a mental health clinician or a sleep specialist, depending on the likely cause. If mood, anxiety or stress seem to be driving the problem, a psychiatric or therapy visit can address both sleep and the underlying condition.

For telehealth, the U.S. Department of Health and Human Services explains that clinicians generally must be licensed or legally permitted in the state where the patient is located, and the rules vary by state. That means where you are physically sitting during a video visit matters. Texas heat can also make bedrooms warm in summer, so a cool, dark room is worth checking as part of your plan.

Getting support in Texas

Lyte Psychiatry offers therapy, psychiatric evaluation and medication management in Texas. In-person visits are available at Lyte Psychiatry's clinic in Pantego, in the Dallas–Fort Worth area, and Lyte Psychiatry offers telehealth visits to patients who are physically located in Texas at the time of the visit.

Most new patients are seen within 1–2 business days. Weekend appointments are limited. All Lyte Psychiatry services are available in Spanish. Availability of specific sleep-focused approaches, clinician fit and insurance coverage require confirmation. You can learn about therapy at Lyte, read about hidden reasons behind sleep struggles, or see when to talk to someone about ongoing sleep problems.

Lyte Psychiatry is an outpatient practice. It does not provide inpatient care, crisis or after-hours coverage, medically supervised detox, or intensive outpatient or partial hospitalization programs.

If you are in a mental-health crisis in the United States, call or text 988. Call 911 for immediate danger.

Educational information, not a diagnosis or individual treatment plan.