Congratulations on your choice to serve your country
Not enough young people are as standup as that in this time of trial.
While in basic training just remember:
1. Dont take it personally. It is your instructor/trainer's job(s) to introduce you to a whole new reality. You'll learn the basic habits and behaviors necessary to exist in close proximity with others and how to survive in times of stress. It's not easy stuff but it's all good stuff.
2. It doesnt last for ever. That is, unless you find you really do enjoy the life and wish to make it a career. Still, while in basic training you'll feel like it's never gonna end. It does tho, eventually
Just remember that, when the going gets tough. Once you're thru bootcamp and thru your specialty school and in the fleet, you're a Sailor! And, you'll never have to do that "I wonder what it would have been like if I'd have joined up" like so many civilians do once they get older and slower and maybe start regretting some chances missed.