Highest So What

After recieving my chemistry test result on monday i realise that i have the highest mark among the two lecture class. But i am not quite happy with the result.After receiving a mark that is 37.5/45 i am disappointed. I start to thin that " what am i doing"? I shouldnt get the mark , i should get at least 40 or full mark . I am not statifies with the result.I feel bad because such a easy question i cannot get full mark.I cant expect myself to compete with other student because the thoughest competitor is my self not other. Every time i get the result that i am not expect to get, i am determine to push my self harder so that i can get what i set for.