If the law of God is really and truly all those things (perfect, sure, right, pure, clean, true, etc.), then why have believers died to the law? Friends, it is because Paul is pointing to a different basis of our acceptance by God. We have never been (and never will be) accepted by God based on our obedience to the law because sin has rendered us unable to keep the law. Instead, by faith, in union with Christ, we are accepted by God through Jesus. In other words, we are justified freely by his blood, not through the law.

All that to say, friends, let us stop trying to earn it. Even for those of us who have been walking with the Lord for some time, we must break this habit. As 17th century Scottish theologian, Thomas Boston, once noted, "Indeed nothing is more incident to men than this; for it is as natural to them to seek to go to heaven by the covenant of works, as it is for fishes to swim, or birds to fly; we being naturally disposed to apprehend God as a great lord and master, and ourselves as his servants, who must work for wages. And so it comes to pass, they consider God absolutely, forgetting Christ the way to the Father." 

Instead of trying to earn it, we must remind ourselves (time and time again) that Jesus has done it for us. And in union with Christ, we are already accepted and loved by the Father. Moreover, we are empowered by the Spirit to live by the law. Hence, the law is no longer a condemning force, but the path to the blessed life. This is how we have died to the law