I would soak in everything I could possibly read. There always seems to be something else to do that is more important or more entertaining than reading a book. I would start reading more often.
I’ve been accused of being a perpetual student. I’d go back into school and get a few degrees, maybe history. I’d travel the world and not only see history being made, I might even make some of it personally.
I might even actually slow down a little and enjoy life more.