when rollercoaster reaches bottom

this morning with all my heart and soul, i walked to the hall like usual optimistically and confidently looking forward to answer my fourth paper. not long until the paper started, once i flipped through question 2, i was dumbfounded. and things got worse after each questions. when reached to a question needed calculation, i was anticipated cause in my mind i was like,'ok ok at last, i know this' but then it ended up causing me more frustration making me felt so stupid and realized how unprepared and how i've taken it for granted. as i flipped and further flipped i felt weaker and weaker.....its a saddening paper that hit me darn hard. if tears were to flow, its tears right from the heart.