Story of subconscious mind

When I woke up today, my mind was so clear. The uncertainity was gone. Everything seemed to be perfect. Thanks to the medicine I took last night :-). Then I went for mock cat. While I was giving test, my mind started losing its grip. I was unable to figure out what rhombus is? was unable to make simple calculation of profit-loss. Had to read question twice before I can start and with this state of my mind RC turned into the toughest battle. While reading passages I couldnt even remember what I read in the last line. And even after arriving to an answer I was taking time to scratch my pencil on the answer sheet. The medicine had finally shown its effect!