Thank you for your question.

There will always be sin in the flesh (Rom 7:18, 1Jn 1:8). If, in your understanding "you" are alive in the flesh, then by default you will serve sin. Now the problem is not "sinning", the problem is me who am the servant of sin. In the book of Jeremiah it says, "Can the Ethiopian change his skin, or the leopard his spots? [then] may ye also do good, that are accustomed to do evil" (Jer 13:23). This verse shows how impossible it is for a sinner to stop sinning. If the tree is bad, then the fruit will be bad as well. The one who tends to the tree does not exhaust his efforts trying to treat the fruit. No, he goes to the source of the bad fruit. The solution is to cut the tree down and therefore eliminate the source of the bad fruit. So then, can you make one who is a sinner stop sinning? Yes. How then do you make them stop sinning? – You kill them. This may sound ridiculous or absurd, but there is no behavior modification etc… that can change the natural humanity. The only answer is death. But it is not a physical death. No, in our heart and soul we are to receive the full impact of the Cross – "I Die, He Alone Lives." This is only as we continue on in knowing the Lord. Once again, when Christ is revealed in the born again believer, then this is known. Now then, when the one who sins is dead, then the sinning stops. When the tree is cut down, then there is no fruit. Romans 6:7 says, "he that is dead is freed from sin." The Lord knowing this, drew all men unto Himself in the Cross (Jn 12:32-33) thereby destroying the humanity that naturally sins. It also says in Romans, "Knowing this, that our old man is crucified with [him], that the body of sin might be destroyed, that henceforth we should not serve sin" (Rom 6:6). This being the case, who then lives? Who lives according to "our" understanding? If it is I, then, "O wretched man that I am! who shall deliver me from the body of this death?" (Rom 7:24). Now if it is not I, but Christ, then "the law of the Spirit of life in Christ Jesus hath made me free from the law of sin and death" (Rom 8:2).

The key element is still Christ being revealed in the born again believer. When Christ is revealed, then the understanding is present that "It is not I, but Christ who lives." When it is Christ who lives, then Life is seen.

Rom 7:18

For I know that in me (that is, in my flesh,) dwelleth no good thing: for to will is present with me; but [how] to perform that which is good I find not.

1Jn 1:8

If we say that we have no sin, we deceive ourselves, and the truth is not in us.

Jn 12:32-33

And I, if I be lifted up from the earth, will draw all [men] unto me. This he said, signifying what death he should die.