"For what I do is not the good I want to do; no, the evil I do not want to do—this I keep doing…What a wretched man I am! Thanks be to God—through Jesus Christ our Lord!…Therefore, there is now no condemnation for those who are in Christ Jesus."
Romans 7:19, 24-25, 8:1
From his own experience, Paul describes the struggle of having new creation wants and desires coexisting and battling within the same body that still houses the desires that he had before being indwelt by Christ.
He turns not to the law to resolve the inner conflict–he turns to Christ and the glory of the gospel!
"The law can tell us what obedience looks like and can chart our course for it, but it cannot give what it commands, and this is as true for the Christians as it is for unbelievers.