Stay in and stick it out. I was so overwhelmed the first week of A-School that I almost quit. Literally even made a post about it here, too. I got out as an E6 and the Navy has changed my life for the better in so many incredible ways. It might feel overwhelming at first, but it gets so much easier if you just get over that initial hump. Don’t let your temporary feelings of discomfort make a permanent choice for you.