What do you when everytime you try chasing yoru dream something comes up?

my dreams the military. September i had a bad year and was talked into applying for ssi, and they wont let me stop the application now so if im not approved, i cant try enlisting until October, and if i am, i cant try until April of next year. It seems every time i try enlisting something comes in the way making it impossible. I have a feeling its happening for a reason, like im not supposed to be a military person, but i want it so bad and its stressing me out beyond belief.