I have been reading biographies too for quite some time — Elon Musk, Peter Thiel , Steve Jobs and what not. One trait which is common amongst all is Obsession with something. They are so obsessed to do what they are doing that everything else becomes meaningless. The problem is
How do you find that obsession?
The problem is how to carry that drive day after day after day?
Is having impact through the work is the most important thing? If Yes then people like me who build just mobile apps etc would get motivated in their work specially when it is not a company like Facebook, Google etc?