i need a miracle

This is driving me manic. I swear, it is :( The last time I sat for two papers in one day was back in 2004 when I sat for O Levels. It`s been 4 donkey years & I don`t know how well I`ll perform tomorrow. Shit this scares the crap out of me :( I don`t wanna mess up. I can`t mess up. ISB & Econs are like two entirely different subjects I just CAN`T fucking mess things up. urgh someone stop me already.