Could you explain the concept of surrendering one's ego or 'me-ness' to Sai Baba as detailed in the prayer within Chapter 26?

Chapter 26 of the Sai Satcharitra contains a profound prayer centered on the surrender of the ego. The author explicitly asks Sai Baba to take away his body-consciousness and the need for knowledge of pleasure or pain. This act of surrender is described as laying one's ego at the Guru's feet, declaring, "from now on, You look after Your own—there is no 'me-ness' left in me." The devotee wishes to be moved according to Baba's will, like a puppet, and even suggests that Baba should become his "me-ness," taking on the experiences of life so the devotee can be free from worry.