"Why do you see the speck that is in your brother's eye, but do not notice the log that is in your own eye? Or how can you say to your brother, ‘Let me take the speck out of your eye,’ when there is the log in your own eye? You hypocrite, first take the log out of your own eye, and then you will see clearly to take the speck out of your brother's eye." -- Matthew 7:3-5

A number of years ago there was a brother who helped me install a sound system in our church sanctuary. He had been a musician in a band years before and he was quite familiar with all the technical stuff. One afternoon when we were working on sound levels and balance I noticed that he wasn't getting it right. Do you wonder why he had trouble? His had lost most of his ability to hear in earlier years and he wore hearing aids. He knew the specifics but he couldn't hear the sounds. 

Along that same line, there are those who know the right and wrong in life, but they fail to practice it personally. They have been blinded by misconduct and yet try to help others see their way into righteous living. Jesus gave us a rather comical picture of a man who had a log in his eye, trying to help remove a speck from his brother's eye. It's like the blind leading the blind or the deaf fine tuning the sound system.
What does Jesus tell us to do when our sight is blocked my friend? Rather than attempting to remove the misconduct from a brother, take the time first and foremost to get your own life right. Clear your sight to see the Lord's leading and clean your ears out to hear the Lord's voice. Then, and only then can you be a true blessing to your brother.