My feelings are not God. God is God. My feelings do not define truth. God’s word defines truth. My feelings are echoes and responses to what my mind perceives. And sometimes - many times - my feelings are out of sync with the truth. When that happens - and it happens every day in some measure - I try not to bend the truth to justify my imperfect feelings, but rather, I plead with God: Purify my perceptions of your truth and transform my feelings so that they are in sync with the truth.
-John Piper, Finally Alive: What happens When We Are Born Again?