go do something that relieves your mind, but no controlled substances. Go take a run or something and look over VERY briefly your notes like what SN1/SN2 E1/E2 all that easy stuff. do not learn any new concepts, no time for that. That's what im doing. Read the summaries in your McMurray textbook just for refresher. and look over the questions you got wrong on destroyer to make sure you wouldn't get them wrong again.