Astonishingly Blind

In each of our lives, this passage [Gal. 5:19-26] is meant to function as a tool of personal insight and a spur to transformation. Each of us suffers from a distorted view of self. As sinners, it is hard for us to be objective and accurate in our self-assessment. During counseling, countless people have angrily declared to me that they were not angry, or self-righteously declared to me that that they were not self-righteous. People can be astonishingly blind to the impact they have on others, and stone deaf to the tone of their own voice. Indeed, one of the main functions of the Bible is to help us see ourselves as we actually are. 

Broken-Down House, Paul David Tripp, p. 214.