In some country such as, Thailand almost people believe that the knowledge is the one way to success. If you doubt why they want to success, you will get the answer from almost people that they want to help their family. Most student come from simply family. Their parent work harder to earn some money to make sure that enough for their child. Because almost people must try to help their family. Try to work to earn some money to send yourselves in the university. Or try to work harder to learn every knowledge to help their work in the future.
So all of the above is the obvious reason that many student in university will have the stress because their family.