Travel from a teen’s all-night Teletype hacks to a global foundation reshaping public health, and see how Bill Gates’ twin forces—relentless discipline and unquenchable curiosity—turn garage code into world-changing flywheels. Learn the lessons behind his midnight debugging marathons, data-driven “BillG Reviews,” solitude-powered Think Weeks, and regret-minimization framework. Each principle comes with concrete take-aways—daily deep-work blocks, self-interrogation rituals, metric dashboards—so you can reboot your own ambitions to Day Zero and grind with purpose that compounds for decades.