I've often thought about what I would have done differently. I talk about it with my wife from time to time just for fun.
If I could go back I suppose I would seek a degree in engineering. I've always had a brain for math, science, physics, and how things go together. Two of my best friends in high school did this. One works for Duke power as an electrical engineer and the other works as an engineer in a ship yard in Newport News. Both of those would've suited me as I find both fascinating.
If life had turned out completely different for me, like not marrying my high school sweetheart and not having bad feet/ankles, I would've joined the military. Navy or Air Force. I've always liked the military lifestyle (albeit from an outsider's perspective) and would've loved to see the world that way and retire early. One of my best friends joined the Navy at 18 and will retire at 38. He lived in Hawaii for 5 years and now lives in San Francisco. He's serving aboard the USS Carl Vinson aircraft carrier.
To be honest, I'm perfectly happy and content the way my life has panned out. I don't make the most money, drive the nicest cars, or have the best house. I do have the greatest wife I could ever ask for, all of my immediate family and most of my distant relatives live within a 50 mile radius of me, I have a decent job with great benefits, I live in the most beautiful place in the world, I have seen all but about 5 states at 29 years old, and I know where I stand with my Creator and Savior. All in all, I wouldn't change a thing.