One of the symptoms of an approaching nervous breakdown is the belief that one's work is terribly important. (Bertrand Russell, Conquest of Happiness (1930) ch. 5)
Studying could be stressful. Non-academic matters, such as family and emotional issues, do not stay away when you study. For non-academic matters, you should seek help from professionals. Following are places where you can get help:
University Student Support / University Counselling