The core principle is that everyone and everything, including a feeling of personal stagnation, has a hidden "centre of gravity" - the vital source of power or support that holds it together. Conventional thinking focuses on superficial aspects or direct confrontation. However, true strategic effectiveness, whether in military conflict or personal life, lies in identifying and targeting this often-invisible centre. By understanding what truly underpins the structure or problem, you can inflict disproportionate damage and achieve a decisive outcome, rather than merely trading blows with the symptoms. This requires looking beyond the obvious, peeling back layers, and adapting your approach to the enemy's (or your own inertia's) specific vulnerabilities, which can be material, psychological, or even abstract.