The question Jesus asked His followers is one we need to answer as well. "Who do you say I am?" My whole life is an answer to that question. While I know I fall very short, my aim is that the thread that runs through my entire life parallels Peter's response. "You're the Christ, the Messiah, the Son of the living God."
That's loaded. And life-changing.
But I need to flip the question around, too. I need to get eye-to-eye with Jesus and ask Him, "Who do You say I am?"
And my whole life should be a reflection of His answer.