I read a lot of books...averaging at least one per week. I always learn something from each book; the authors make some good points, maybe in a way I hadn't heard before.
Notwithstanding all the books I've read, I've always found that the author's paradigm includes some sort of "enemy," something to be tolerated or fought against, someone or something to be overcome, whether in our own nature or the nature of others.
A book I just finished paraded the enemy right in the title, "Ego is the Enemy" (by Ryan Holiday).
As long as there's an enemy, we will have a hard life and will lack full integrity. Our very philosophies have pitted us against ourselves.