What does the term river stage mean? Water science questions and answers, from the USGS Water Science School
According to Sigmund Freud, the ego is part of personality that mediates the demands of the id, the superego and reality. The ego prevents us from acting on our basic urges (created by the id), but also works to achieve a balance with our moral and idealistic standards (created by the superego).
The superego acts as a conscience and is the parental voice within the person. The ego is the structure that must somehow balance desire, reality and morality. Freud described the ego as serving three masters; the id, the external world and the superego.   M.Abdulla.