You are present in the form of ego. You have an inborn conviction that:~- you are an individual apart from the world.+

Yoga Vasishtha: ~"Teachers, interpretations of sacred texts, the force of religious merit--none of these lead to the realization of that Ultimate Truth which is revealed in the clear reflection of the heart, engendered from contact with the good." 

Without the ego, the world ceases to exist. Without the world, the ego ceases to exist.  You are the ego. Without the ego, you cease to exist.   Thus, you cannot be your own servant.  Without realizing 'what is what'-one will not be able to understand. Assimilate and realize the non-dualistic truth.  

The ego, body, and the experience of the world appear together and disappear together. The ego + body= waking entity (person).  From the Nondualistic perspective, the ego, body, and the experience of the world are one in essence.  That essence is consciousness. Thus, there is no second thing that exists other than consciousness.  

Thus, there is only oneness.  There is no division in consciousness in Non-dualistic reality. Till one is egocentric all sorts of doubts and confusion arise. If one is soul-centric then there are no doubts and confusion because everything is consciousness.

In a dream, there are a dream ego, a dream body, and the dream world. The whole dream disappears when waking takes place. Similarly, the whole waking disappears in deep sleep and also when wisdom dawns. The wisdom dawns when the waking entity realizes it itself is not the Self.   

The dream is a parallel waking experience and the waking experience is a parallel dream. The one that witnesses the coming and going of the three states is not the waking entity (ego) but the Soul, the  Self.  

Till one holds the ‘I’ or ‘I AM’ as the Self, all the confusion will go on. The ‘I’ is not the Self. The ‘I’ is the whole universe in which your body and ego exist. The ego cannot be killed because the ego and the world appeared to gather and they disappear together. Who has to kill the ego? How can the ego kill itself when it is the very basis of physical existence (universe)?

You are present in the form of ego. You have an inborn conviction that: - you are an individual apart from the world. And the world existed prior to you and you are born in this world and you are living in this world.

Even In the dream, one has the same inborn conviction that: - he is an individual apart from the world. And the world existed prior to you and he is born in this world and you are living in this world.

Till this conviction is there the duality prevails.  The illusory nature of the dream is exposed when waking takes place. Similarly, the illusory nature of the waking will be exposed when the Advaitic wisdom dawns.  

The Advaitic wisdom dawns when the waking entity (you or ego) realizes it itself is not the Self but the Self is the formless Soul, which witnesses the coming and going of the three states, in the midst of duality.:~Santthosh Kumaar