"For I delight in the law of God, in my inner being, but I see in my members another law waging war against the law of my mind and making me captive to the law of sin that dwells in my members. Wretched man that I am! Who will deliver me from this body of death? Thanks be to God through Jesus Christ our Lord! So then, I myself serve the law of God with my mind, but with my flesh I serve the law of sin. There is therefore now no condemnation for those who are in Christ Jesus."
(Romans 7:22-25; Romans 8:1 ESV)
I have found how so much of every day is characterized by this internal battle between my flesh and the Spirit within me. It pains me. I so often choose my flesh, and would always choose things of my flesh if it wasn't for grace. I am overcome with joy when I remember, It is Finished. Jesus suffered in my place on the cross and made peace with God for me. We can rest in that. Period.