I believe that God brings about the times where we struggle with sin and temptation in His sovereign will. Everyone has sin that is hanging over their heads. I mean that its not just the sins that are easy to overcome... like the big ones.. but its the sin that we struggle with on a daily basis. I mean also that sin is part of the way we think... the inability to live as if we are rejoicing in Him as He is too us. Sin is present in us and is always the reason that we struggle with sorrow. When there is no more sorrow there will be no more sin. When there is no more sin it will be because we are passed on to the other side. But God can make our sins very burdensome to us. Now then in teaching our consciences this attitude of grace then we are being forgiven. Repentance is an attitude that God requires more than we can produce in order to atone for our sin. Its not necessarily focusing on ourselves as a means to find a sin in order to overcome that sin. A person who is familiar with the danger of sin has become familiar with the free grace of God.