In the final part of this series, the focus shifts to the ultimate goals. This post defines the numbers that complete the dream: the "Key Bill" passive income that covers a major expense, the Financial Independence (FIRE) number that makes work truly optional, and the “Big Dream” fund.

This is where the relationship with work and debt fundamentally changes. In Part 4 of this series, the focus shifts to two game-changing milestones: achieving "Net Zero Debt" and calculating a "Relaxed Employment" number - the point where a future retirement is secured, creating immense career flexibility.