Insomnia is a very common problem. Sleep aids, over-the-counter and prescription have been proven to be harmful if taken long-term. They even raise the risk of Alzheimer’s.
A small dose of melatonin (300 mcg, or 0.3 mg) can help better than the usual 3 mg dose sold in most stores. You can also try valerian root and definitely adhere to sleep hygiene. This includes no reading or watching TV in bed, no screens for at least an hour before bedtime, no eating or exercising within two hours of going to bed, and sleeping in a cold room (65 to 68 degrees). Going to bed at the same time also helps.
If you still can’t fall asleep, try visualization. Actually, you don’t just use your visual memory but engage all the senses. This post was prompted by a WSJ article on this topic, A Happy Memory Can Help You Fall Asleep, if You Know How to Use It.
I usually imagine myself on a beach in a hammock under a tree, feeling a warm breeze on my body, seeing a beautiful view of the beach and the ocean, smelling fragrant flowers, and hearing the sound of waves lapping at the shore.
Once you find your happy place and can vividly recreate it, always use the same setting without variation. This way you will fall asleep within minutes.