Our bad emotions are what people usually call their dark side, C. G. Jung likes to call this part the “shadow”.  But just as everyone’s personality is different, everybody’s dark side is different too someone could have problems controlling their anger, frustration, sadness, etc. These differences can be explored by looking at Dr. Jekyll from the book The Strange Case of Dr. Jekyll and Mr. Hyde, Marvel’s super hero Dr. Bruce Banner, the character Smeagol from the trilogy The Lord of the Rings, and myself.