We still get tempted by sin, and if we want to sin we still have the choice to sin, but if we do not want to sin, and hate sin, we have the Holy Spirit to cause us not to sin, for we will not fulfill the lusts of the flesh, for we have crucified the flesh with the affections and lusts, and show the ways of the Spirit, which there is no ways of the flesh there, and God will not allow us to be tempted above what we are able, and will give us an escape from the temptation so we can bear it.
Paul says we have the 2 natures, and said when he does good, evil is still present with him, so by the flesh he serves sin, not that he is sinning but he is tempted, which he said there is no good thing that dwells in the flesh, but with the mind he serves Christ.
Even Jesus when on earth was tempted in all points as we are, yet without sin, so if the man Christ Jesus could not escape temptation, and had the 2 natures, how will we escape it, but the man Christ Jesus was always led of the Spirit, so even though his flesh was tempted to sin he did not have a desire to sin being God manifest in the flesh.
We will be tempted and we might sin, but we can be forgiven, but we should have the right attitude that sin does affect our relationship with God, and to hate sin, for without that attitude we cannot be led of the Spirit, for the Spirit will not lead anybody that enjoys sin, for then they are led of the flesh.