I understand where your anxiety comes from- you don't know what to expect and people are telling you scary things. Yes, nursing school is hard.
But don't forget, YOU got into nursing school! You earned your spot in this program through hard work. You will continue to work hard, and everything will be okay if you stay positive and stay focused.
For me, the hardest part of nursing school was learning skills like IVs because of the limited time in clinical and learning how to do NCLEX style questions. I am a 'people person' and connecting with patients came easily to me, I have strong critical thinking skills, and I learned a strong work ethic in my prerequisite classes so nursing classes weren't too difficult.
My advice is to take it one day at a time. Keep a calendar. Keep a 'to do' list. If you can, cut down on the hours you are working during nursing school. If you take care of your kids or have other responsibilities, ask for support. Make friends with other nursing students. Study in a quiet space.
Everyone talks about how horrible and hard nursing school is. It is true, nursing school can suck. But no one talks about the great parts of nursing school. You will spend lots of time with other nursing students and make lifelong friends. You will get to know your patients and you will remember them forever. There's nothing more rewarding than your first IV stick. You may see open heart surgery, a baby's first breath, comfort someone who just found out they had cancer, etc. Don't stress too much! Good luck!