The route that you ultimately take in an effort to resolve any type of sleeping disturbance depends on whether it is an acute, isolated incident or if it is a more chronic problem that plagues you frequently and/or on a long term basis.
Everyone has an occasional sleepless night when they drink a late cup of coffee or find themselves over analyzing a situation at work.
To identify and remedy this type of sleep issue, it is relatively easy and can usually be solved with a pinch of common sense and a dose of lifestyle awareness: For example, take note of your nightly retiring routine by keeping a diary: http://chatkath.hubpages.com/hub/Importance-of-Qua... Often, the culprit becomes more clear when we are able to visualize sleep sabotaging habits that were previously unaware of.
On the other hand, if you suspect that you have a more serious sleep snafu in spite of your attempts at simpler slumbering solutions, it might be time to see a specialist. There are so many sleep disorders and sleep disorder clinics around that you will probably want to do some research first: http://hubpages.com/health/Sleep-Disorders-and-Tre...
Many folks don't realize how important quality sleep is until a disruption occurs, and we find ourselves impatient, unable to focus, perform adequately at work or at home. Everyone suffers, especially with the more chronic sleep disorders so the sooner you can resume your healthy sleep routine and balance, the happier everyone will be! Best of Luck to You!