You can look up some books used to study for the major you are interested in to estimate difficulty.I am studying to get my masters in accounting. I find the material so boring that I want to change majors. Studying something interesting (like science) would actually make my life better. It would make me passionate about something. That's why I want to go into Physical Therapy. Too bad that I will probably find the material too hard for me, since I am not that good at math and I would have to take another 1 year of undergrad college before going to PT school.