In the early basic sciences I find hardship totally absent (other than watching some classmates suffer, which I wish they didn't have to). Some of my friends say it gets better because they find the later material (and clinics) much more interesting and others hate being in the hospital all the time. Whether it gets better or worse ... I'm not worried about it. I'll look for ways to enjoy the experience and learn as much as possible. Most students are doing ok and you have this distribution on the joy curve. Hardships are not inherent in the system. Many of the people who seem to suffer the most hardship worry about things like grades, ranking, or impressing people like their friends or professors. Other don't get help when they face a crisis and suffer mostly alone unnecessarily.
If you have no fear of being wrong sometimes (or even often), enjoy learning stuff that might help you diagnose and treat a patient someday, you find a happy life to be had (depends on the school to some extent probably). Yes, the hours are long, so don't even think about medicine if you're looking for a 9-5 thing unless you never had to study in your life and made straight A's. If you don't worry and just do your best (and look for things you enjoy), spend time with people you like, realize that the worst thing they can do to you is kick you out so you can find something else that's a lot of fun (extremely rare to get kicked out unless you don't study or don't take care of life's problems early enough), you can really enjoy it. Of course, that's really the hard part ... letting go of the mania that too many of us have been raised with so we can actually enjoy life.