It’s just you.
I think it just depends on the person. I’m only in my first semester, and have nearly lost my mind. The content is as hard as I imagined. I wouldn’t say it is necessarily harder than the classes of my previous degree. And DEFINITELY easier than the epidemiology and statistics class I took for that degree, but it is the TIME you have to put in to be successful. For instance, I have 14 different assignments due over the next few days, and that doesn’t include all the reading that I need to do. I also feel like I spend a lot of time trying to get organized and learning how to study and handle the NCLEX style questions (hating the select all that apply-grr!!). Add to that 3 kids, laundry, a messy house, appointments, dinner, two dogs, and a husband that works full time, it is overwhelming!!! I know many of my classmates are in the same situation.
Everyone has a different situation, and some people handle stress better than others. I recommend using your situation to help your fellow classmates. You can help them study or support them when they are freaking out about an exam, etc.