How does one break the cycle of rebirth, and what role do desires play in this process?

Chapter 37 explains that the cycle of rebirth is perpetuated by the 'seeds of desires.' Just as a tree grows from a seed, a new body is obtained after death through the seeds of one's past actions and unfulfilled desires. This cycle continues with unhindered speed as long as these desires persist. The text teaches that to break this cycle and achieve immortality, one must destroy these desires at their very root. Doing so removes the 'knot in the heart,' which is the dwelling place of sorrow, and allows a mortal to become immortal, a core teaching in Vedanta.