Who said "Fear is just fuel if you know how to use it."?

This quote is attributed to Guardians of the Galaxy.

Fear is just fuel if you know how to use it. - Guardians of the Galaxy

"Fear is just fuel if you know how to use it."

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."