Motorsport is the purest marginal-gains laboratory: every lap is measured, every decision has a consequence, and improvement is only real when it shows up under pressure. Margins Win Championships brings that mindset out of the garage and into everyday life, translating the logic of tight feedback loops, micro-goals, friction removal, and consistency engineering into a practical system for durable performance.This is not a motivation book. It is a method for building momentum you can trust-whether you are trying to write, train, study, lead, create, or simply follow through more reliably. The emphasis is on controllables: the habits that make progress visible, the measurements that keep you honest, and the routines that survive real life instead of collapsing the first time the week gets messy.Each chapter treats performance as an accumulation of small advantages: establishing baselines before chasing brilliance, mapping inputs and constraints, reducing errors with checklists, protecting attention, raising decision quality, and converting experience into improvement through debriefs. The result is a step-by-step approach you can apply immediately, then keep running as your own "championship season" across 12 weeks-designed to compound without burning out.