If you see problems in the Guru, if you see imperfections and lapses, will you ever really take his medicine? Will you really have confidence in his prescription, let alone faith? But when you are smart and stubborn then you have confidence only in yourself. No Krishna, no Shiva, no Brahma, no Vishnu can save you; you are your own teacher!
Remember what Ashtavakra is saying, remember what Krishna is saying. These words are not for somebody who lacks in penance, who has not put himself through the fire of self-purification. These words are not for somebody who is not totally devoted to the Truth.
Guru’s words are not at all for somebody who has the slightest of doubt in the Guru.
To read the complete article: On Ashtavakra: The self uses the words of the Guru to defend itself from the Guru