Yesterday I went to a KTV room with some of my good (friends) for the first time.I was in bad mood the whole afternoon because I didn't do well (in )the English exam.At the KTV,everybody sang popular songs (happily) except me.Because I was afraid that I couldn't sing well,so I dared not have a try.(Encouraged) by my friends,I picked up the microphone and( sang) an English song---"Yesterday Once More".Now I have become (cheerful) and above all I've (overcomed) my shynesses.I believe that the chief enemy in one's life is oneself.We shouldn't lose our heart just because of one or two failures.