Sometimes insomnia begins during a stressful event, for example, work stress, financial problems, or relationship issues. Often people will lie in bed and worry about these issues. The problem is, the more you worry, the less likely it is you will sleep. Once the insomnia sets in, the worry tends to be about how much sleep you will get in the night, and how you will function the next day.
Often the sleep problem improves once the stressful situation resolves. However, for some, the insomnia persists even after the stress has resolved. This is when professional help is needed.
For others, insomnia is a symptom of another problem. For example, insomnia is a symptom of depression and anxiety. If you have depression or anxiety and are able to improve your sleep, you might find you feel more alert during the day, think more clearly, make better decisions, and therefore, manage and cope with your mood much better.