feeling helpless again

ok guys so my old manager quit where i work and the guy well abuses his power. i work hard and harder then i should but this new manager makes me feel like shit. he gets after me all the time and threatens my job on a daily basis. i still work hard like i did with the other managers but he continues to treat me like i am just a piece of meat with no feelings nothnig. i hate this guy with every part of my being. and i dont know what to do i get good hours at this job and with this economy that is hard to come by. i cant quit because of all my bills and school to save for. i hate that this guy has controll over me and the fact that i have to let him. this is why i dont go into relationships i dont want anyone controlling me and life. its mine, but in this situation i cant help but feel helpless