The issue Paul is addressing in Romans 6 is our continual urge to sin. As long as we live in this age we will battle with the desires of our old nature. The big difference for those who are in Christ is grace. This grace is not as we see here in Romans 6 a license to sin and get away with it; a get out of jail free card, rather it is the power of God over sin. Grace is the only force that can render sin powerless. Without grace, man cannot overcome the urge to sin, they will give in to it, over and over again, no matter the consequence.
An acronym for GRACE is God's Riches At Christ Expense. We have the Holy Spirit the same source Christ had to live sin-free, in us, so, therefore, we can live sin-free. We have been crucified with Christ as it says in Galatians 2:20 and here in Romans 6:6, which means our sins are nailed to the cross, and just as Christ was raised from the dead, we have been raised to new life (Romans 6:7-9). No more excuses! We do not have to give in to sinful urges. It does not mean we won't be tempted, for Jesus Himself was tempted in all ways but did not sin (Hebrews 4:15). So the temptation is not what is wrong it is the act. So what do we do when we are tempted? 1 Corinthians 10:13 says God always gives us a way to escape. As long as we acknowledge God in every situation we will receive direction to do things His way (Pro. 3:5), and not fall into the trap of sin.
Romans 6:13 says do not let your bodies become instruments of sin but rather let them be instruments for His glory. Our lives are a song, they are either demonically influenced or heavenly inspired. When we surrender our lives into the hands of God we become His instrument to produce the songs of heaven that draw others towards Him. Nobody serves themselves, everyone serves somebody, so even when one thinks he is in control of his life, they are deceived for they are completely under the control of their sinful nature. We are either slaves to sin or slaves to righteousness. Someone is playing us, we are just mere instruments, a product of whoever is pulling the strings. I would rather have the person playing me be the one who makes the best music, where my life is an inspirational song rather than just the chaotic, disjointed noise of this world.
My prayer for each of you today is that you step into the grace of God and live under His power. All it takes is acknowledging Him and allowing Him to direct your life, then you become His instrument to play the music of heaven.