It is always hard to find your inner strength when your mind doesn't help you. Your mind can control every single cell which exists on your body. For a person with cyclothemia disorder, things are much worst.

Cyclothymia, also called cyclothymic disorder, is a type of chronic mood disorder widely considered to be a milder or subthreshold form of bipolar disorder. Cyclothymia is characterized by numerous mood disturbances, with periods of hypomanic symptoms that do not meet criteria for a hypomanic episode, alternating with periods of mild or moderate symptoms of depression that do not meet criteria for a major depressive episode.

An individual with cyclothymia may feel stable at a baseline level but experience noticeable shifts to an emotional high during subthreshold hypomanic episodes, with symptoms similar to those of mania but less severe, and emotional lows involving depressive symptoms that do not meet the criteria for a major depressive episode. To meet the diagnostic criteria for cyclothymia, a person must experience this alternating pattern of emotional highs and lows for a period of at least two years with no more than two consecutive symptom-free months. For children and adolescents, the duration must be at least one year.

http://en.wikipedia.org/wiki/Cyclothymia