Life is like a box of chocolates; you know where everything is, and what everything is by looking at the diagram. And just when you have a plan for what you want to do, someone takes your favorite piece, and screws up the rest of the box while doing so!
Think carefully about what you want in life, and chose a directed path towards that goal. Over time and after great effort you will reach the location of your quest. Only to find that it is no longer applicable or relevant .