Question

What did freud call the part of the personality that learns that we will be happier if we postpone gratification?

Answer 1

It is called "ego" by Freud.

As per Sigmund Freud's psychoanalytic hypothesis, there are three sections to the identity: the ego, the id and the superego. The ego is the mental segment of the identity that is spoken to by our cognizant decision-making procedure. The ego keeps us from following up on our essential desires.

Answer 2

According Freud the part of the personality that learns that we will be happier if we postpone gratification is referred to as ego.
The ego is one of the three components (together with the id and the super ego) in Sigmund Freud's structural model of the psyche.
The ego is the part of the psyche that is responsible for dealing with reality.