I'm considering joining the marines. Any Jarheads on fluther?

I’m gonna be 24 in April and feel like I have no direction in life. I started to reunite with old friends and it made me feel better that most of them are not really doing anything either lol. Still I need some change. I don’t to repeat the same old working for dad and going nowhere with it. The only thing really stopping me is fear. I really don’t know what I want to be in the service as far as job goes either. Any Marines to give out advice on the matter?