15 Years Training Marines in Hand-to-Hand Combat Taught Me One Rule: Never Underestimate Discipline
I spent fifteen years training Marines in hand-to-hand combat, and during that time I repeated the same rule so often it practically became a part of my DNA: never underestimate discipline, and never overestimate bravado. Strength fades. Size can be neutralized. Speed can be countered. But discipline—the quiet control of mind, body, and intent—is something…