I've been telling myself, "it's okay to not know" and telling well-meaning, curious people who ask what I can do at the end of my degree, "I'm not sure yet." But, provided I don't fail this semester, this time next year I'll be graduated, then what am I supposed to do?

Hmmm, somehow, I can't imagine joining the army would do good things for you. But I have no doubt recruiting campaigns make it sound amazing.