Hello, I understand how you feel, I used to work as a nursing assistant too and it is a hard job, esp physically. I resigned because I couldn't not handle school and working at the same time. With regards to your question, personally LPN program is hard, I don't know about how hard it is compared to RN though. Also, the prerequisites, I think it depends on the school but here, you have to have math, anatomy & physiology, chemistry, psychology done before getting into the program. I am sure you'll be fine. Goodluck.