You know that sleep is vital to your physical and mental health. But, how can you tell whether youre truly sleeping well? Especially if you work shifts, your sleep probably does not look exactly like other peoples sleep. It can be hard to measure your sleep patterns against those of the people around you.

On average, adults should optimally receive between seven and nine hours of sleep each night, but those needs vary individually. For example, some people feel best with eight consecutive hours of sleep, while others do well with six to seven hours at night and daytime napping. Some people feel okay when their sleep schedule changes, while others feel very affected by a new schedule or even one night of insufficient sleep.

Here are some statements about your sleep. If these apply to you.

1. its a good sign that your sleep is on track. If youre a shift worker and you dont agree with many of these, it could mean that you need to make changes in your behaviors and routines to improve your sleep. 1. You fall asleep within 15-20 minutes of lying down to sleep.

2. You regularly sleep a total of seven to nine hours in a 24-hour period.

3. While in your bed, your sleep is continuous—you dont have long periods of lying awake when you wish to be sleeping.

4. You wake up feeling refreshed, as if youve “filled the tank.”

5. You feel alert and are able to be fully productive throughout the waking hours (note, its natural for people to feel a dip in alertness during waking hours, but with healthy sleep, alertness returns).

6. Your partner or family members do not notice any disturbing or out of the ordinary behavior from you while you sleep, such as snoring , pauses in breathing, restlessness, or otherwise nighttime behaviors.

Shift workers who try to sleep during the day often wake up after fewer than seven to nine hours, because of the alerting signals coming from their circadian system . This does not mean they dont need seven to eight hours of sleep per day—it just means its harder to sleep during the day. Over time, this can lead to chronic sleep deprivation.

Sleep tips: 6 steps to better sleep

Think about all the factors that can interfere with a good nights sleep — from work stress and family responsibilities to unexpected challenges, such as illnesses. Its no wonder that quality sleep is sometimes elusive.

While you might not be able to control the factors that interfere with your sleep, you can adopt habits that encourage better sleep. Start with these simple tips.

1. Stick to a sleep schedule

Set aside no more than eight hours for sleep. The recommended amount of sleep for a healthy adult is at least seven hours. Most people dont need more than eight hours in bed to achieve this goal.

Go to bed and get up at the same time every day. Try to limit the difference in your sleep schedule on weeknights and weekends to no more than one hour. Being consistent reinforces your bodys sleep-wake cycle.

If you dont fall asleep within about 20 minutes, leave your bedroom and do something relaxing. Read or listen to soothing music. Go back to bed when youre tired. Repeat as needed.

2. Pay attention to what you eat and drink

Dont go to bed hungry or stuffed. In particular, avoid heavy or large meals within a couple of hours of bedtime. Your discomfort might keep you up.

Nicotine, caffeine and alcohol deserve caution, too. The stimulating effects of nicotine and caffeine take hours to wear off and can wreak havoc on quality sleep. And even though alcohol might make you feel sleepy, it can disrupt sleep later in the night.

3. Create a restful environment

Create a room thats ideal for sleeping. Often, this means cool, dark and quiet. Exposure to light might make it more challenging to fall asleep. Avoid prolonged use of light-emitting screens just before bedtime. Consider using room-darkening shades, earplugs, a fan or other devices to create an environment that suits your needs.

Doing calming activities before bedtime, such as taking a bath or using relaxation techniques, might promote better sleep.

4. Limit daytime naps

Long daytime naps can interfere with nighttime sleep. If you choose to nap, limit yourself to up to 30 minutes and avoid doing so late in the day.

If you work nights, however, you might need to nap late in the day before work to help make up your sleep debt.

5. Include physical activity in your daily routine

Regular physical activity can promote better sleep. Avoid being active too close to bedtime, however.

Spending time outside every day might be helpful, too.

6. Manage worries

Try to resolve your worries or concerns before bedtime. Jot down whats on your mind and then set it aside for tomorrow.

Stress management might help. Start with the basics, such as getting organized, setting priorities and delegating tasks. Meditation also can ease anxiety.

Know when to contact your doctor

Nearly everyone has an occasional sleepless night — but if you often have trouble sleeping, contact your doctor. Identifying and treating any underlying causes can help you get the better sleep you deserve.