The Guru demands one thing only; clarity and intensity of purpose, a sense of responsibility for oneself.
The very reality of the world must be questioned.
Who is the Guru, after all? He who knows the state in which there is neither the world nor the thought of it, he is the Supreme Teacher. To find him means to reach the state in which imagination is no longer taken for reality. Please, understand that the Guru stands for reality, for truth, for what is. He is a realist in the highest sense of the term. He cannot and shall not come to terms with the mind and its delusions. He comes to take you to the real; don't expect him to do anything else.
The Guru you have in mind, one who gives you information and instructions, is not the real Guru. The real Guru is he who knows the real, beyond the glamour of appearances. To him your questions about obedience and discipline do not make sense, for in his eyes the person you take yourself to be does not exist. Your questions are about a non-existing person. What exists for you does not exist for him. What you take for granted, he denies absolutely. He wants you to see yourself as he sees you. p205
-- Sri Nisargadatta Maharaj, I Am That