3.4% of your life is not much if you get Facebook equity and end up with millions. The hardest part - I think - is that you are not assured at all to get rich. You might end up spend 3.4% of your life to buy you a new car and that's it.
2. Do whatever you wish to do, every single day, such as spending a year studying philosophy while travelling the world, or deciding to learn salsa for a year and a half.