I know exactly how you feel Shattered ...

In 2006 I was 21 and I was enlisted in army too...

Needless to say I screwed that up like most things in my life. I went awol and when I came back to my hometown started up my drugs and running from my problems. I had to turn myself in eventually, and luckily everything worked out for me except losing that career, my pride, and receiving an other than honorable discharge.

Life, however, does go on after the military I can assure you of that. My advice plan your next steps carefully.