David Goggins wakes at 3:59 a.m., pounds out twenty brutal miles, delivers a corporate gut-check on discipline, and writes a chapter titled “Embrace the Suck” before midnight strikes again. The finale of the Lock In & Grind series is a full-throttle tour of the 40 % Rule, the Cookie Jar, and ice-bath meditation—proof that pain is just rent on growth and that the boats still need carrying tomorrow at 3:59 sharp.

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