How to Retire at 40

Exactly. You don't need 80% of your income, you need 100% of your expenses. If you're saving 40% of your income, you need to save until your investments can reliably generate 60% of your income. If you're saving 60% of your income, you need to save until your investments can reliably generate 40% of your income.

Alright, let's see how they do it...

1. "a blog where he chronicles his retirement experience"

2. "writing a book about retirement"

3. "blogging about financial independence"

It seems the trick to early retirement is blogging about early retirement.