Day 30. 10 principles. 30 days. You now have judgment frameworks that most professionals never develop in an entire career. Let that land.

But here's what's true: knowledge isn't mastery. Practice is. You have the map. The territory is your actual decisions, starting today.

The 90-Day Challenge: use the checklist on 10 decisions, journal your reasoning, review outcomes at 90 days, extract 3 lessons that update your system.

Jeff Bezos used one simple framework — regret minimization — for the decision that became Amazon. One clear principle, applied consistently.

The pitfall at this stage: celebrating the learning and skipping the practice. Insight without reps is a book unread. Use the tools.

Judgment compounds over years, not days. You've planted the seed. Now water it — with every decision you make more deliberately than before.

This is it. Day 30. You have the frameworks. Now comes the only part that actually builds mastery: using them on real decisions, over time.

The 90-Day Challenge: four commitments. Make them now, set your calendar reminders, and the system will carry you the rest of the way.

Commit 1: Use the checklist on at least 10 decisions. Commit 2: Journal your reasoning before you decide. Write both down right now.

Commit 3: Review your outcomes after 90 days. Commit 4: Extract 3 lessons that update your system. Set all three calendar reminders: Day 30, 60, 90.

You totally rock. Not because the course is over — but because you showed up for 30 days and built something most people never start.

The journey is complete. All bearings gleaming, every lesson absorbed, the compass radiant — and always pointing toward your best judgment.