Sin is condemned in the flesh

Rom 8 says
8:1 [There is] therefore now no condemnation to them which are in Christ Jesus, who walk not after the flesh, but after the Spirit.
8:2 For the law of the Spirit of life in Christ Jesus hath made me free from the law of sin and death.
8:3 For what the law could not do, in that it was weak through the flesh, God sending his own Son in the likeness of sinful flesh, and for sin, condemned sin in the flesh:
8:4 That the righteousness of the law might be fulfilled in us, who walk not after the flesh, but after the Spirit.

Jesus condemned sin in the flesh. The sin dwelling in you is already condemned. The sentenced is passed. You have been justified, but the sin in you have been condemned. Now you don't have to worry when you do something wrong, because the condemnation is not for you, but for sin in you. This means that you will remain, and the sin will gradually disappear, as you embrace the life of the Spirit. If the sin has been condemned, and you made righteous, you can now live in the Spirit of Life. Life mortifies the sin in your bodies. It carries out the sentence against sin. It executes the sin that have been condemned to death. So the sin is on death row, and you are the executioner. You don't need to be intimidated by the sin, because you have the authority to mortify it. How do I kill the sin? I live in the Spirit, and the Life kills the sin and death that was at work in me.

8:5 For those who are according to the flesh and are controlled by its unholy desires set their minds on and pursue those things which gratify the flesh, but those who are according to the Spirit and are controlled by the desires of the Spirit set their minds on and seek those things
which gratify the [Holy] Spirit.

If the executioner will listen to the prisoner on death row, and be intimidated by his threatenings, the executioner will become afraid, and will start doing what the prisoner demands, although the executioner still has the upper hand. If you look at the sin dwelling in your body, the sin will use the law of Moses against you, and try to intimidate you by fear of death. We can only be intimidated by the law, if we don't realise that Jesus Christ has Himself justified us and declared us righteous. So let your thoughts dwell on what Christ did, and mind the things of the cross of Christ, and the holiness and glory that He has given you by grace through His sacrifice on the cross, and refrain from thinking that you are guilty and evil, because of accusation that comes by the law of Moses. The rightfull and just requirement of the law is now fully met in you, because Christ dwells in you. The sin is condemned in you, and has no power over you.

8:6 Now the mind of the flesh [which is sense and reason without the Holy Spirit] is death [death that comprises all the miseries arising from sin, both here and hereafter]. But the mind of the [Holy] Spirit is life and [soul] peace [both now and forever].

We want to execute the sin that brings death that has already been condemned by Christ Jesus. The law of Moses only deal with natural things and not with spiritual things. It is thoughts of flesh, and not thoughts of the Spirit. The law will only bring a mind of condemnation and guilt. This is the mind of the flesh. So the law failed in securing man's salvation, because man was fleshly. Because man was fleshly, the law could not produce something spiritual. But Christ had the Spirit of God, and He fulfilled the law for us. He has now freely given us His Spirit, which gives us the mind of the Spirit, the mind of Christ.

If you try to reason without the Gospel, and without the Holy Spirit, you will only think fleshly thoughts. If your reasoning is guided by the Holy Spirit, and focused on what Christ did on the cross, you will mind the things of God, because you will realise that you are justified and made righteous by grace. This thinking, that comes through the spirit, produces life, and kills sin in your body. If you think you're guilty of sin because of the law, your thinking will produce more and more sin, and you will experience more and more death.

8:7 [That is] because the mind of the flesh [with its carnal thoughts and purposes] is hostile to God, for it does not submit itself to God's Law; indeed it cannot.

The prisoner's thoughts are hostile to the thoughts of the guard, because the guard has the power to kill it. The prisoner will try everything to try and intimidate the guard. The thoughts produced by the law, i.e. the thoughts of condemnation and guilt can not submit to the law of God, which is the Law of the Spirit of Life, which is that man has been justified freely by grace, and that we have been made alive by the Spirit. So if we allow the thoughts of condemnation and death in our hearts, a war will ensue, and the peace will disappear. Just think of Christ, and what He did for you, live in the Spirit, and your will kill the sin (prisoner) which is trying to intimidate you by the law of Moses.

8:8 So then those who are living the life of the flesh [catering to the appetites and impulses of their carnal nature] cannot please or satisfy God, or be acceptable to Him.
8:9 But you are not living the life of the flesh, you are living the life of the Spirit, if the [Holy] Spirit of God [really] dwells within you [directs and controls you]. But if anyone does not possess the [Holy] Spirit of Christ, he is none of His [he does not belong to Christ, is not truly a child of God].
8:10 But if Christ lives in you, [then although] your [natural] body is dead by reason of sin and guilt, the spirit is alive because of [the] righteousness [that He imputes to you].
8:11 And if the Spirit of Him Who raised up Jesus from the dead dwells in you, [then] He Who raised up Christ Jesus from the dead will also restore to life your mortal (short-lived, perishable) bodies through His Spirit Who dwells in you.
8:12 So then, brethren, we are debtors, but not to the flesh [we are not obligated to our carnal nature], to live [a life ruled by the standards set up by the dictates] of the flesh.

You don't have to obey the dictates of the sin that lives in you. You have been made free from it, and God gave you the Spirit of Christ, so that you van live through Him. Living the life of the Spirit, kills the life of the flesh in you.

8:13 For if ye live after the flesh, ye shall die: but if ye through the Spirit do mortify the deeds of the body, ye shall live.

It does not say that if you live after the flesh you shall go to hell. You can not loose your salvation. It simply means that your body will die, but you can live the life of the Spirit, and verse 11 says that the Spirit of God will the restore to life your mortal body. That simply means that you will live and not die. It means immortality, everlasting life.

Acts 24:16 Therefore I always exercise and discipline myself [mortifying my body, deadening my carnal affections, bodily appetites, and worldly desires, endeavoring in all respects] to have a clear (unshaken, blameless) conscience, void of offense toward God and toward men.

It is by the Spirit. You can not do it by trying in the flesh.
Gal 5:16 But I say, walk and live [habitually] in the [Holy] Spirit [responsive to and controlled and guided by the Spirit]; then you will certainly not gratify the cravings and desires of the flesh (of human nature without God).
5:17 For the desires of the flesh are opposed to the [Holy] Spirit, and the [desires of the] Spirit are opposed to the flesh (godless human nature); for these are antagonistic to each other [continually withstanding and in conflict with each other], so that you are not free but are
prevented from doing what you desire to do.
5:18 But if you are guided (led) by the [Holy] Spirit, you are not subject to the Law.

Col 3:1 IF THEN you have been raised with Christ [to a new life, thus sharing His resurrection from the dead], aim at and seek the [rich, eternal treasures] that are above, where Christ is, seated at the right hand of God.
3:2 And set your minds and keep them set on what is above (the higher things), not on the things that are on the earth.

Don't try to overcome sin. Think of what Christ did for you.

3:3 For [as far as this world is concerned] you have died, and your [new, real] life is hidden with Christ in God.
3:4 When Christ, Who is our life, appears, then you also will appear with Him in [the splendor of His] glory.
3:5 So kill (deaden, deprive of power) the evil desire lurking in your members [those animal impulses and all that is earthly in you that is
employed in sin]: sexual vice, impurity, sensual appetites, unholy desires, and all greed and covetousness, for that is idolatry (the deifying of self and other created things instead of God).
3:6 It is on account of these [very sins] that the [holy] anger of God is ever coming upon the sons of disobedience (those who are obstinately opposed to the divine will),
3:7 Among whom you also once walked, when you were living in and addicted to [such practices].
3:8 But now put away and rid yourselves [completely] of all these things: anger, rage, bad feeling toward others, curses and slander, and foulmouthed abuse and shameful utterances from your lips!
3:9 Do not lie to one another, for you have stripped off the old (unregenerate) self with its evil practices,
3:10 And have clothed yourselves with the new [spiritual self], which is [ever in the process of being] renewed and remolded into [fuller and more perfect knowledge upon] knowledge after the image (the likeness) of Him Who created it.

You can not win when you try by yourself to overcome your sin. Do not try it. Christ has won already. He has condemned sin in the flesh already. He has done it in His body. He has withstood sin unto the pouring out of His own blood. He has been tempted in every respect as we are yet without sin. He was holy blameless and spotless according to the law, and He did die without cause for your sins. Sin has been condemned in His flesh, so that the righteous and just requirement of the law might be fully met in you, who live in the Spirit! He has given you His Holy Spirit.

You need to look at what he did, and live in the Spirit. Enjoy Christ. Enjoy your life in Him. By doing that, you mortify the deeds of the flesh. By letting Christ have full freedom in your body, and by totally yielding your life to the Holy Spirit, His life kills the sin and death in your body. You need to yield to Christ. He can't believe on your behalf. This is your role. Believe in Him, and yield to His Holy Spirit. Constantly turn away from self and the law, and turn to Him. Turn away from trying by the law, and look to what He did. If you sin, don't think you're condemned, believe that you're forgiven by what Christ did. You do have an advocate with the Father pleading for you. You are forgiven and free, don't listen to the lie that tries to convince you of sin and guilt and condemnation. That captivity has been led captive, and you have authority over it in Christ Jesus our Lord.