True. you'll see most of the people are students Most common cause is frustration and fear of future. Now a days peoples are developing pressure among themselves to build a good future and when the free is not fulfilled , they don't see any other options.

And some is due to family pressure of not providing enough element to live a happy life.

I think institute should provide education to how to handle failure and there are many other thing that one can do to live a happy life. It's necessity to do so to lower the pressure of students and focus on the knowledge then to think about the future aspects.