Want out of the Army?

im 19, and i took the oath and signed some papers. sooo.. im uming im in the DEP. but ive decided that i dont wanna be in the army just yet. one day i came in just to get info and, boom, i was swearing in. it was all so fast i thought i was doing something that i wanted. but i realize i dont want to just yet. i ship out january 26th. can i get out of this, and how?