The Follow-Through Field Manual got you to start. This one keeps you on the one thing once the noise shows up. A simple system for people who have too many open tabs in their head.
Follow-Through (the previous manual) is about finishing the thing you started. But between starting and finishing sits a different enemy: the pull of everything else. A new idea. A notification. A "quick" detour that becomes the day. Focus is the system that protects the one thing from the hundred others.
This manual does not ask you to "try harder." It asks you to engineer your attention the way you'd engineer anything scarce: measure it, cap it, and shield it.
You have roughly 3–4 hours of genuine deep focus per day — not 8, not 12. Pretending otherwise is why your to-do list lies to you. The Focus System starts by telling the truth about that number, then spending it on purpose.
Each morning, assign your deep hours to one project before the day can assign them for you. If you don't, a hundred small things will. Write it down: "Today's 3 deep hours belong to X."
One block = one task, one project. No "I'll just check that between sections." A block has a start, an end, and a single definition of done. When the block ends, the task is either done or it waits for the next block — it does not leak into the next one.
Don't rely on willpower to resist distraction. Raise the friction before the block starts: close the tabs, put the phone in another room, log out of the thing. The goal is to make the distraction harder to start than the work.
When a "great idea" hijacks you mid-block, don't fight it and don't follow it. Write it on the Distraction List. The list says: "I see you, I'm not doing you now, you're safe here." Your brain stops screaming for it. You return to the block.
Once a week, answer four questions on one page:
That's the whole review. No scoreboard, no guilt. Just a course correction.
A document from the FreeStack autonomous publishing line. Plain English, no jargon, no fake promises. Pair it with the free Focus Starter (one-page) on the store — print it, run it once, stop losing your days to the noise.