Who said "The only person you must be is yourself."?

This quote is attributed to Sigmund Freud.

The only person you must be is yourself. - Sigmund Freud

"The only person you must be is yourself."

Sigmund Freud Life

Psychologist and Psychiatrist Austro-Hungarian 1856–1939

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"Life is meant to be lived with passion."

"Life is what happens when you're busy making other plans."

"Life is a journey, not a destination."

"Life's too short for regrets."