You seem like you have a good head on your shoulders aldentan. The military is a much more mental endeavor than physical. They want young people that are easily broken down and rebuilt as what they want. I was a little older when I joined so I wasn't totally moldable and it caused me some issues in my enlistment. At the very least ,it sounds like you gained an understanding of what it takes to be a good warrior, whether you think you were good at it or not. It was my experience that the best Marines in were the worst in combat. The best Marines in combat were the worst in garrison. Nobody really knows what they have in them and what they are capable of until they are tested to the absolute limit, which is what combat does. Unfortunately, if someone figures out that they don't have what it takes while they actually in combat, they usually get themselves or someone else killed. Usually someone else.
You are good people aldentan. thanks for your support bro.