Who said "To be effective, one must act without hesitation."?

This quote is attributed to Lannister.

To be effective, one must act without hesitation. - Lannister

"To be effective, one must act without hesitation."

Lannister Work

"A Lannister always pays his debts."

"I am the god of tits and wine."

"You are an awful man."

"I drink and I know things."

"Hard work never killed anybody."

"Work with purpose and integrity."

"Hard work pays off in the end."

"A man's gotta do what a man's gotta do."