My psychology teacher said this essay was extremely well written. So maybe it will help.
Depression are feelings of sadness, hopelessness, pessimism,
and a general loss of interest in life, combined with a sense of
reduced emotional well-being. Most people experience these feelings
occasionally, often as a normal response to a particular event.
However, if the depression occurs without any apparent cause,
deepens, and persists, it may be a symptom of a wide range of
psychiatric illnesses. When a person's behavior and physical state are
also affected, it then becomes part of a true depress…
