Army or Navy which one?

I was in the Navy so I can't speak for the Army. I believe you when you say that you are motivated but remember that everyone that goes into SEAL training said the same thing. They will mentally and physically break you. Just keep that in mind. In the Navy when you are on sea duty you will deploy for about 6 months every other year. In the months leading up to your 6 month deployment, or cruise, you will go on smaller deployments for a couple of weeks to a month at a time. Living space onboard are very small, about the size of a coat closet turned on its side is where you will sleep and keep your belongings. To put it in perspective imagine a typical McDonald's restaurant dining room. That space can hold up to 80 people. Plan to work 12+ hours a day, every day, and pull into port about 1-2 times a month if you are lucky. When you are in port and you don't have a duty day you can go out in town and relax. When you are back at base and not deploying you will likely live onboard the ship until you move up the ranks. When you are lower on the totem pole the work is grueling and sometimes demeaning, but it must get done.