The type of course you are studying and the type of student you are studying have a lot to do if an online course will be difficult for you. These are important factors to remember when deciding if you want to take an online course.
You must be if you are inclined to study hard or to relax. Self-awareness is important in this decision. Do not try to fool yourself. There is something else to consider when deciding whether a course you are considering would be difficult.
Take a critical look at the area you are considering. Some areas of study will be more difficult than others. However, if you are motivated and focused, you can face any challenge. You could choose something that seems above you, such as law or medicine, if you feel a great desire to succeed in these more difficult areas.
All those who have taken courses at the university know that not all classes are equal in difficulty. Classes in his main field of study are usually full of detailed instructions on techniques. They also involve learning essential formulas and facts. Others have been called charges.
Other courses are more general personal interest and are sometimes called fillers. They can be interesting but are not as difficult. Filling course will be the easiest of both types to take online.
Classical university courses include interaction with a teacher who is simply not part of the online course design. Some students simply have difficulty understanding this concept and can not handle it, while others excel in this context.
If you think you need in-person instruction, online courses probably do not work for you. They do not have the usual office hours and time after class to work with you.
When you plan to take an online course, make sure you have done some research before you start.