Answer:
superego
Explanation:
Superego is the moral aspect of an individual's personality, according to Sigmund Freud's Theory of Psychoanalysis. The superego is responsible for taming and repressing primitive instincts based on moral and cultural values. It's the superego that is repressing Sally's desire to eat because she's overweight and because there are so many starving people in the world.
Alongside the Id and the Ego, the Superego composes the so-called Personality Theory, developed by Freud in the framework of his studies on psychoanalysis.