well i am a student of class 12th CBSE board..

i have been fairly consistent in my exams....to be honest i am a bright student...

but in my half yearlys i scored a 76 in economics which has never happend as i have always scored great in economics...

it has left me shattered and is making me  think whether i am even good enough to score well in this subject in the board examination..

i would like some pointers on how to deal with this subject ?

thank you :)