Who said "I am not defined by who I was, but who I choose to become."?

This quote is attributed to Sif.

I am not defined by who I was, but who I choose to become. - Sif

"I am not defined by who I was, but who I choose to become."

Sif Change

"I have waited lifetimes for this moment."

"A warrior's heart beats strongest in battle."

"We are bound by more than just duty."

"The past shapes who we become."

"Change brings new opportunities."

"Every day is a new opportunity."

"Healing doesn't mean forgetting."

"You either get better or you get bitter."