His Grace not law

Sin Shall not your master over you, for you are not under the law but under grace.
Romans 6:14

Grace is a system of living whereby God blesses us because we are in Jesus Christ, and for no others reason at all. Yet many people are miserable because they still live with old Testament viewpoint a viewpoint that causes them to try to stay in God favor by good behavior.
The Law demands, "Your behavior must improve to receive God blessing! It is simply wrong to believe we make spiritual progress or gain God's blessing based on what we do. It is oppose of the grace walk.
Grace is the voice of God saying, "I will bless you until your behavior does improve!" When Grace fills us, we want to live a consistent godly lifestyle. It is the faithfulness of God that causes our heart to be changed so we are motivated to godly living by desire, not a sense of religious duty.
Don't struggle against sins you may set in your life. Instead, mediate on the reality that your Father loves you to matter how you behave. He love really is unconditional. As you immerse yourself in His love you will find that your desire are changed so that sin loses its magnetic attraction.