My Master Only Breaks Through Every Time the Limit Is Reached

My teacher only makes breakthroughs when pushed to the absolute limit.
Every advancement comes precisely at the brink of his capabilities.
Progress happens solely when boundaries are fully tested.
My mentor reaches new heights only when facing ultimate constraints.
Growth emerges exactly when limits are stretched to their maximum.
Breakthroughs occur just as endurance reaches its breaking point.
Mastery unfolds only through confronting extreme challenges head-on.
Evolution happens precisely when pushed beyond perceived boundaries.
My guide transcends only when standing at the edge of possibility.
Transformation comes solely through facing the utmost thresholds.