ELI5: Explain Like I'm 5

Ego (Freudian)

In Freudian psychology, an ego is like the boss of your mind. It helps you make decisions, it keeps you safe, and it helps you get along with other people. The ego works hard to balance your wants and needs with what is actually realistic and possible. It is the part of your mind that is the 'realistic' part - the part that tells you that it is not OK to take cookies from the grocery store without paying for them.