What happened to my happy life?

What happened to me, Why i suddemly became sad and gloomy???Just suddenly??? i dont know...WHAT HAPPENED TO MY HAPPY LIFE!!!!!WHO TOOK IT AWAY???GIVE IT BACK??? haiz....why i am so gloomy??is it about love???i think so.....or about results???neh, not possible...Studies???Not possible too...Suddenly my expression change to sad...sad i say...Can you all suggest me???