I hate the stress i get from school :(?

i am taking four cles. out of those four, i'm taking two cles (piano reading and a statistics cl) that are just stressing me out to the extreme. i just checked my midterm grades and i got 2 a's in my first two, and i FAILED the last 2. this is just midterm so i still have a chance to get a good grade, but still!!! i've been trying so hard. im going to get a tutor this coming monday, but i feel hopeless and like i'm doomed to fail. what should i do :-(