The real war really is internal... will I follow what my spirit knows is The Way, or will I let my mind or body send me elsewhere to satisfy their desires? Over and over... the fight is to stay on the narrow path (which I have sometimes strayed a long way from).
"This hill, though high, I covet to ascend;
The difficulty will not me offend.
For I perceive the way to life lies here.
Come, pluck up, heart; let's neither faint nor fear.
Better, though difficult, the right way to go,
Than wrong, though easy, where the end is woe."
John Bunyan, The Pilgrim's Progress