Who said "You have to believe in yourself when no one else does."?

This quote is attributed to Harry Potter.

You have to believe in yourself when no one else does. - Harry Potter

"You have to believe in yourself when no one else does."

Harry Potter Courage

Character in Harry Potter and the Prisoner of Azkaban

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"A true friend would never stop believing in you."

"Strength comes from within."

"The map shows us something we never dreamed of."

"Some people are worth saving."

"Never let fear stop you from chasing your dreams."

"Courage is being afraid but doing it anyway."

"Sometimes you gotta do what you gotta do."

"Sometimes you have to be the monster to stop the monsters."