Who said "The only way to deal with fear is to face it head on"?

This quote is attributed to Guardians of the Galaxy.

The only way to deal with fear is to face it head on - Guardians of the Galaxy

"The only way to deal with fear is to face it head on"

Guardians of the Galaxy Fear

"I'm your friend, man. I do this because you're my friend."

"Sometimes the thing you fight the most is the thing you need the most."

"We are Groot."

"You're welcome for saving the galaxy, by the way."

"Face your fears with courage."

"You can't live your life in fear."

"Snakes. Why'd it have to be snakes?"

"Fear is just another obstacle to overcome."