I don't think any of my jobs were hard compared to the jobs some other people have; I wouldn't feel right calling them 'hard'.. but working during college was really rough. Was basically out of the house from 9am-11pm, either being in class or at work with 15 minute breaks in between each (IE: go to class, then 15 min to get from class to work (I worked on campus doing IT work)). It wasn't hard per se, but it was pretty physically and mentally draining to be 'on' for over 12 hours a day, and then having to come home and do homework. Not fun