Your description is difficult to understand. It seems that Japanese doesn't translate into English very well, so not knowing Japanese myself, I can only guess at your meaning.
"My bible is myself. It is the word." = My word is the truth in as much as the Bible is the word of God.
"For me, I believe in myself and walk. I will work on songs. I want to put the meaning of.
Also, I do not need a how-to book anymore, I want to decide myself confidently, including the meaning that I can act."
I believe in myself and no longer need books to tell me how to act. I sing with meaning. I perform with heart.