Life planning by spreadsheet - imagine knowing that you can an extra six figures in your pocket just by moving to a better country where one of its features is tax savings (over the course of the time it takes to live there to get longer term/permanent residency).
I did my own calculations to determine how long it will take for me to retire (which is basically, how long until I no longer -have- to work). It's possible to retire on 1.125million by the age of 40, providing that expenses don't completely increase (aka I maintain a good savings rate) and having tax advantages. Also needing to maintain a good amount of positive cashflow.
(It's all theoretical, but I'm happier about calculating various future scenarios)
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