Assuming an exam as the last chance of proving preparation or treating it as last chance for doing something good is the reason of stress other than the peer pressure and desire of recognition from society.
Take an exam just a test, it's not final, life is full of opportunities to do good for society to do good for yourself, to excel in various fields just maintain calm of your mind by considering the calmness above result of all exam and above situation dependent recognition given by society.
Impact of your work on general public on weaker section of the society can be a good indicator of the goodness of your work/deed.
calmness increases efficiency and decisive power.
-Lovekush kumar