YOU SAID:

I'm so bored I don't want to write my book

INTO JAPANESE

私は自分の本を書きたくないのでとても退屈している

BACK INTO ENGLISH

I am very bored because I do not want to write my own book

INTO JAPANESE

自分の本を書きたくないので、私はとても退屈しています

BACK INTO ENGLISH

I am very bored because I do not want to write my own book