First, arm yourself with Philip K. Dick’s two proclamations: “We have always already won,” and “The theory changes the reality it describles.” Now, the technique by which you fight: faith and logic. If you only have one, go with logic, but if you have both, let faith precede logic. If you can, believe in Jesus Christ, and in following him will you always go where you need to go. When you think you have him working in you, how do you feel? If you experience within as to seem like a conquering avenger, ready to smite down any adversary, you’re on the wrong track. If you feel humble and flawed, you’ve got the right ticket.
What you’re fighting for is the Logos. This is what Christ is sometimes called, also known as the Word (of God). But we will use the term Logos for these purposes, for Logos is related to logic, giving you a standpoint of “right logic”. What I wrote above, that of faith and logic, this could be a sense of what Logos means. And what you fight against is derangement, the twisting of logic to evil ends, of making lies and perverting of reality to make those lies seem as if true. What the bad guys want most of all is power, and then riches. To them, the most you’ll ever be is a means to an end.
As far as if one is making a real difference, remember that Satan was ultimately defeated by Our Lord Jesus Christ on the cross—it did not mean there was no more work to be done. Also remember the Bible when it says that those who show hospitality to strangers may have entertained angels thereby. [Hebrews 13:2] That if you do something on the side of Logos, it might turn out to be an important thing in the War that was fought. That we are fighting. That we will continue fighting, on and on, for billions of angels fought on in the War. Most likely, there will be important battles which so far have not played out where eternity will touch down in the timestream.
Another way of thinking about Logos vs. Derangement: sense vs. madness. Also, understanding vs. heartlessness. If you can undo damage caused by the derangement, if indeed you can steer madness back to sanity, this is indeed a blow for the side of right. If you can set your own self straight, it might be that a skirmish happened there, in your sensibilities. Fight for reason, for this is another name of the Logos. Do everything in the spirit of love, for this is what moves us all.
The instruction I give you is very earthly in nature. What is the difference between just doing good and fighting for the Logos? Being a good boy scout and doing your good deed for the day is all well and fine, but we’re looking for a little more. The Lord spoke of it: when someone strikes you on the cheek, turn the other; when someone steals your shirt, give him your jacket, also. Be incomprehensible to evil. In that way will you be called a child of God, who is Himself love, incomprehensible.