Should I join the army? I'm 18, jobless, I left college because I am too indecisive about what I want to do with my life. I am a little overweight, but lift weights three times a week on average. I'm kinda withdrawn sometimes, and shy. But I want to change those things about me and better myself somehow, and I thought the army would be a good way to do it. I want something mentally challenging like Intelligence or the Engineers, but am completely unsure of what to do. Any advice?