From today's devotional
Keeping a record of sins (or holding a grudge) is like building a wall between you and another person, and it is nearly impossible to talk openly while the wall is there. God doesn't keep a record of our sins; when he forgives, he forgives completely, tearing down any wall between us and him. Therefore, we fear (revere) God, yet we can talk to him about anything. When you pray, realize that God is holding nothing against you. His lines of communication are completely open.