Pressure?

somebody can say something like "i scare i cannot pass this exam" with their mouth smiling while i can't even imagine what will happened to me when i get the exam paper. in fact, i never feel this much pressure like this time before despite i went through lots of though exams. not only because of i don't know anything about the exam, not only because this is the super though one; it is mainly because of the people around me. sometimes i feel that i am too small to be compare to them, they study hard to get a HD, i study hard hoping i won't fail. the gap is just too big. they actually mean "i scare i cannot get a good results" when they says they are afraid of failing. sometimes i feel i didn't know who are them already. sometimes i didn't even know who am i.