It is no longer you who live, but Christ who lives in you.

Galatians 2:20, "You have been crucified with Christ, it is no longer you who live, but Christ who lives in you; and the life you now live in the flesh you live by faith in the Son of God who loves you and gave himself for you."

And notice in 2:20 that since the old fleshly ego is crucified, a new "you" lives, and the thing about this new "you" is that it lives by faith. "The life you live in the flesh you live by faith in the Son of God who loves you and gave himself for you." The flesh is the ego which feels an emptiness, the flesh prefers to use its own power to fill its emptiness. As Romans 8:7 says, "The mind that is set on the flesh is hostile to God; it does not submit to God's laws." The basic mark of the flesh is that it is unsubmissive. It does not want to submit to God's absolute authority or rely on God's absolute mercy. Flesh says, "I'd rather do it myself."

Galatians 5:24, "Those who belong to Christ Jesus have crucified the flesh with its passions and desires." There is a war between your flesh and God's Spirit. There is a war between your flesh and your Spirit that is in you, but the flesh is crucified in you as a Christian.

Galatians 5:17 says, "For the desires of the flesh are against the Spirit, and the desires of the Spirit are against the flesh; for these are opposed to each other to prevent you from doing what you would." So you as a Christian will experience struggles within. You as a Christian will war with those desires from the power of the Spirit. Conflict in your soul is not all bad. Even though you long for the day when your flesh will be utterly powerless and only pure and loving desires will fill your heart., Worse than the war between flesh and Spirit, is no war within because the flesh then controls your decisions. Praise God for the war within! Contentment in sin is death. So take heart if your soul feels like a battlefield at times. It is a sign that the Holy Spirit is at work in your Spirit. It is not that you have no bad desires, but that you are at war with them!

The main point is not war, but victory for the Spirit. Galatians 5:16 says^: Walk by the Spirit, Live by following the Spirit. Then you will not do what your sinful self wants, you will not let those bad desires come to maturity. When you walk by the Spirit, you nip the desires of the flesh in the bud. New God-centered desires crowd out old Self-centered desires. The desires of the flesh—will still be a war, but the winner of that war will be the Spirit. When the main battle of your human existence (Which is the Flesh) has been crucified by the Spirit. The Spirit will have captured the capital and broken the back of the resistance movement. The flesh is as good as dead, either controlled in this life or destroyed forever in your Life to Come.