How does the text describe the relationship between our true self, the body, and the illusion of 'I and mine'?

Chapter 17 explains that our true nature is that of the pure Brahman, but we have become bound by our association with the physical body, similar to a parrot being tied to a tube. This delusion, fueled by the "Maya of infatuation," causes us to forget our true form. The text in chapter 17 advises that the ego-driven concepts of "I and mine" are as illusory as a mirage. To achieve freedom, one must recognize this confusion, become free of 'mine-ness,' and, like the parrot, release the tight hold to fly high and return to one's true state.