There has probably been a time in your life where no matter how tired you became; you still were not able to fall asleep. This may have been going on for several nights sporadically, over a week period, special occasions, or has been continually going on for much longer. Hopefully, these tips I'm about to share will help you sleep better at night. DISCLAIMER: The advice I am giving is from my personal experiences or those that I talk to. It should not be used to replace a licensed physician's advice.
Before we begin, let me address an elephant. The first step of getting a good night sleep is good mental health. If you suffer from depression, sleep apnea, or other condition that is causing you to regularly not sleep at night, please do not feel embarrassed to go to a licensed professional. It is not taboo; it is a serious condition that may require extra help to treat. This does not make you weak.
First thing we will talk about is breathing and meditation. One cause of lack of sleep is not being able to relax at the end of the day. With all the stresses of everyday life, it can be hard to turn your mind off when it is time to sleep. A good way to help this is to meditate. You can find strategies all over the internet. Another way is to control your breathing. Purposefully take slow, deep breaths (If it helps count them). It will slow your heart rate and give you something else to think about than your stresses helping you fall asleep.
The next thing to help you sleep is stability and consistency. Your body has an internal clock, it is referred to as the circadian rhythm or circadian clock. this clock regulates the periods of sleepiness and wakefulness. Jet lag occurs because "real time" changes from the internal clock. To help your circadian cycle, avoid eating within 2 hours before bed, bright lights before bed, heavy exercise, (as these are all natural resets throwing off the time your body thinks it is) and try to go to bed at the same time each night. If you struggle with this, consider setting an alarm and stick to it.
Finally, make sure you are comfortable. Researchers believe it is best to sleep in a dark, cool room with light ambient noise and a warm bed. If you suffer with cold feet/hands, consider wearing socks/gloves to sleep. Also, be sure to regularly maintain your mattress and pillows. (Average life span of a bed is 5-10 years). Finally, if you and your partner's bedding style varies, consider making the bed with two twin sets so as to make sure no one steals covers and both can achieve their ideal setting. (If it looks tacky you can cover it with your regular sized comforter.)
Sleep is a very important part of maintaining a healthy lifestyle. Hopefully, the tips in here will help you to fall asleep quicker and sleep more soundly. You will appreciate the difference!