

Robin and Dominguez wrote the book that launched FIRE in 1992. The bit that still rewires people thirty years later is not a number. It is the way they re-define money itself.
FIRE number at common UK annual spends
Rule of 25 at the 4% safe withdrawal rate. UK State Pension (~£11,973/yr from 67) reduces the bridge required.
Key takeaways
The book outlines a nine-step program to achieve financial independence.
The first step is to make peace with your money by assessing your financial situation.
It encourages tracking every penny spent to understand where money goes.
Debt elimination is a key step using methods like the debt snowball or avalanche.