Steve Peters
The book presents the mind as a logical Human and an impulsive, emotional Chimp that often compete for control. Learning to manage this inner primate is presented as a way to improve emotional regulation and performance.
The Chimp is an independent emotional machine within your brain that processes information through feelings and impressions rather than facts.
While you did not choose your Chimp and are not responsible for its nature, you are responsible for managing its behavior.
You are the Human, operating from the frontal lobe with logic and rationality, seeking long-term fulfillment over immediate gratification.