Rom 7 9Once I was alive apart from law; but when the commandment came, sin sprang to life and I died. 10I found that the very commandment that was intended to bring life actually brought death". The apostle is not saying that his life is controlled by sin continuously being put to death. He is teaching one conversion. When he was regenerated the law exacerbated his sin. The law was the instrument that put us to death in Christ. When we dont need to be re-crucified by the law. The point is that when we died to the law we were given an understanding that we are sinners. The apostle is not teaching about putting sin to death by word and Spirit. He is describing the relationship to sin in our salvation. This is why he describes the new understanding of his sin with frustration. 14We know that the law is spiritual but I am unspiritual, sold as a slave to sin. 15I do not understand what I do. For what I want to do I do not do, but what I hate I do. 16And if I do what I do not want to do, I agree that the law is good. 17As it is, it is no longer I myself who do it is sin living in , but it me. In my new understanding I acknowledge that I sin all the time. But now it is a cursed thing. The apostle understands that he is no longer identified with that cursed thing. Just like the Psalmist he points to his redeemed self.