Let's not forget that the little emotions are the great captains of our lives and we obey them without realizing it. ~Vincent Van Gogh, 1889

Webster's definition:   Emotions are a conscious mental reaction (such as anger or fear) subjectively experienced as a strong feeling usually directed toward a specific object and typically accompanied by physiological and behavioral changes in the body.   

All feelings are good, as a natural part of our physiology:
Dr. Pert, PhD feels that emotions (dark or light), should not be ignored, banished or suppressed and that there is harm in doing so.  Through acknowledgement  and integration to our lives, these emotions can not ambush us.  
She says that, "There are no bad emotions ...only ones that are stuck (suppressed or denied)" and the suppression of these emotions will lead to a loss of cellular integrity (function, communication and production) both biologically and psychologically.  That loss of integrity presents itself in many forms in the body/mind ..dis-ease, pain, limiting beliefs or discomfort.

Unsticking those emotions through emotionally based methods such as bodywork, guided imagery, hypnosis, energy medicine and EFT gives you the freedom to your live your life authentically.

Emotion is "the flow of information perceived to be essential for the survival of any particular state of consciousness making the observation"   Everything you Need to Feel Go(o)d   p.233