Who said "I've learned that your greatest enemy is often yourself."?

This quote is attributed to Mystique.

I've learned that your greatest enemy is often yourself. - Mystique

"I've learned that your greatest enemy is often yourself."

Mystique Fear

"I'm not going to apologize for who I am."

"Acceptance isn't something you find, it's something you must create within yourself."

"We are what we choose to be, nothing more."

"Sometimes the hardest thing is looking in the mirror and accepting what you see."

"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."