A death march is a forced march of prisoners of war or other captives or deportees when they walk over long distances and for an extremely long period of time, being supplied with little or no food and water. The result is that the weakest of them die primarily due to exhaustion and dehydration.
Galatians 5:16So I say, live by the Spirit, and you will not gratify the desires of the sinful nature. 17For the sinful nature desires what is contrary to the Spirit, and the Spirit what is contrary to the sinful nature. They are in conflict with each other, so that you do not do what you want. 18But if you are led by the Spirit, you are not under law. 19The acts of the sinful nature are obvious: sexual immorality, impurity and debauchery; 20idolatry and witchcraft; hatred, discord, jealousy, fits of rage, selfish ambition, dissensions, factions 21and envy; drunkenness, orgies, and the like. I warn you, as I did before, that those who live like this will not inherit the kingdom of God.
When we are new creations in Christ, that is, we are justified through Christ and because of that God's love has adopted us as sons of God. We are new creatures in Christ and immediately we find a war within us. Our old sin nature versus our new self. Why do so many of us fall victim to the Death March where we slowly fall back into the old and forget the new.
Less of us and more of Him, of HIs Word, of prayers and supplication to Him daily are the only ways that we can slowly put the ways of this world behind us and become what Christ calls us to be: Disciples of Christ. By that, we see the fruit of the new self: