Honest with God

I love that Job poured out his hear to God, sharing earnestly his hurts and frustrations. In Chapter 6, Job is talking to Eliphaz, but in Chapter 7, he is talking to God. Obviously, I want to be respectful in my conversations with the Lord, but I also desire to be real and honest, using everyday langauge. God knows my heart and my emotions even better than I know myself, why should I try to "filter" what I share with Him?