what should i do

i attended cet6 of test. it's an english level test in China. but i didn't pass. this time i had confidence and now i feel saded because i made a big mistake. it ruled that composition shuould write within 150 words, but i writed in 300 words above. it is a deadly fault. i think if i should attend again in December. at the same time, I'm going through a relationship. i also considered that in what way to develop this relationship. how to insist. a long way to go. i should think more clear. and i welcome every friends to give me some suggestions