The big buzz word that is coming about is FIRE. FIRE stands for Financial Independence Retire Early. As I read about it and study it I see that a lot of people that are part of the FIRE movement stick to the FI part more often than the RE part.
Using the 4% rule, is the way we have come up with our Financial Independence Number. We take our annual spendings and multiply by 25. That number gives us a goal to set-up before us to achieve that moment where we can withdraw.