trust me, brah, you lack the discipline to become great at anything.
i once wanted to be a painter. not just any painter, but a GREAT painter, but i didn't want to bother with painting a thousand crappy pictures so i emailed some of the greatest painters in the world and asked them to quickly teach me everything they have spent a lifetime learning. not a single one of them ever got back to me because they're a bunch of dicks, just like musicians.
the military may not have taught your pops anything but it'll help you.