Generally speaking, there are four walks of life: the ways of the knight, the farmer, the artisan, and the merchant. - Miyamoto Musashi

When your spirit is no longer foggy, when the clouds of bewilderment clear away, there is the true void.

This is what you’re looking for. In fact, The Book of Five Rings is often placed alongside The Art of War by Sun Tzu, On War by General Carl von Clausewitz, Infantry Attacks by Field Marshal Erwin Rommel, and Patterns of Conflict by Colonel John Boyd. Each of these works has materially influenced military thinking, directly or indirectly influencing modern combat despite the fact that they were written decades or even centuries ago.

I dreamt of worldly success once.