GPS... Recalculating

I don't own a GPS system but have borrowed one recently - I'm now hooked! There is something overtly comforting to know you will always know where you are headed when you have this system turned on. If you make a wrong turn, it recalculates and tells you so - then tells you how to get back on track. I was thinking about how soothing it would be to have a life GPS - you can take turns on a whim and if it's a wrong turn, it'll recalculate you back on the right path. There are so many uncertainties in life - would be nice, huh?