Insomnia

I think I'm suufering from insomnia, and from wikipedia, it maybe falls under terminal (or late) insomnia.
Here is something about the insomnia and what are the possible causes.

Terminal (or late) insomnia - early morning waking. Often a characteristic of clinical depression.

Then let see what is clinical depression.

Major depressive disorder (also known as clinical depression, major depression, unipolar depression, or unipolar disorder) is a mental disorder characterized by an all-encompassing low mood accompanied by low self-esteem, and loss of interest or pleasure in normally enjoyable activities.

Which I think I have...
Then, let us see some sign and symptoms.

Major depression is a serious illness that affects a person's family and personal relationships, work or school life, sleeping and eating habits, and general health.[1] Its impact on functioning and well-being has been equated to that of chronic medical conditions such as diabetes.[2]

A person suffering a major depressive episode usually exhibits a very low mood, which pervades all aspects of life, and an inability to experience pleasure in activities that formerly were enjoyed. Depressed people may be preoccupied with, or ruminate over, thoughts and feelings of worthlessness, inappropriate guilt or regret, helplessness, hopelessness, and self-hatred.[3] In severe cases, depressed people may have symptoms of psychosis. These symptoms include delusions or, less commonly, hallucinations, usually of an unpleasant nature.[4] Other symptoms of depression include poor concentration and memory (especially in those with melancholic or psychotic features),[5] withdrawal from social situations and activities, reduced sex drive, and thoughts of death or suicide.

Insomnia is common among the depressed. In the typical pattern, a person wakes very early and is unable to get back to sleep.[6] Hypersomnia, or oversleeping, is less common.[6] Appetite often decreases, with resulting weight loss, although increased appetite and weight gain occasionally occur.[3] The person may report multiple physical symptoms such as fatigue, headaches, or digestive problems; physical complaints are the most common presenting problem in developing countries, according to the World Health Organization's criteria for depression.[7] Family and friends may notice that the person's behavior is either agitated or lethargic.[6]

Depressed children often display an irritable rather than a depressed mood,[3] and show varying symptoms depending on age and situation.[8] Most exhibit a loss of interest in school and a decline in academic performance. They may be described as clingy, demanding, dependent, or insecure.[6] Diagnosis may be delayed or missed when symptoms are interpreted as normal moodiness.[3] Depression may also coincide with attention-deficit hyperactivity disorder (ADHD), complicating the diagnosis and treatment of both.[9]

Older depressed persons may have cognitive symptoms of recent onset, such as forgetfulness,[5] and a more noticeable slowing of movements.[10] Depression often coexists with physical disorders common among the elderly, such as stroke, other cardiovascular diseases, Parkinson's disease, and chronic obstructive pulmonary disease.[11]

Well, I do have history of diabetes within close family members. But not on the psychosis. I dont think I have it that bad.

Should I start getting some treatment? I hope I can overcome my insomnia soon, and be happy again and enjoying my life...