What is the passage mainly about?

Emotions motivate and guide us. Fear of the lion prepares the body for fight or flight. Love binds individuals into cohesive units greater than the sum of their parts. When we succeed or fail at a task, or are praised or scorned for a particular behavior, emotional reactions are our rewards (feels good) or punishments (feels bad) and become the guideposts for our future thoughts and actions. The neocortex works with our emotions to solidify our plans. We dream about a goal and anticipate the emotional rewards of realizing it. Our self-esteem can be wrapped up in these goals and plans. They become our "mental models," setting what is important in life and largely defining who we think we are. This is how we become determined to "stick with the program. "Mental models may range from the very short term and mundane, such as a plan to jog 12 laps, to lifetime goals and world views, such as a career path and religious beliefs. When mental models are tied to rewards, we fear and rebel against their disruption, aiming to avoid disappointment or disillusionment. Because it receives and processes sensory input faster, our emotional mind can censor from conscious awareness information that may interfere with the task required to make the goal.