Who believes that people must have an accurate awareness of themselves and live meaningfully in order to be psychologically well adjusted?

Answer: Existentialist

Explanation:

Existentialism is a philosophy that focuses on person's existence and their freedom to make their own choices.

It states that people can still make rational decisions in the world that is irrational.

It states that there is no powerful forces and people should just assign their own meaning to their life.

According to this philosophy people should rise above it all and make their own path as they define their own lives

Existentialism is based on just purely believing in existence without following any specific school of thought