What’s the difference between Unique Self and soul?
Soul means different things in the different traditions. In some of the texts and traditions, it means the spiritual quality of your separate self. As long as it means this, it is limited in time, place, and duration—so it is subject ultimately to death. It lacks the quality of the infinite. It is special, beautiful, holy, and sacred—it’s your soul—but ultimately it is an expression of separateness and subject to the contraction of the separate self.
Soul in this understanding is the spiritual nature of your separate manifest self.
Unique Self speaks to a different manifest reality. It says that both your manifest and unmanifest reality are unique. Your True Self is also unique – because you have a Unique Perspective. It’s the perspective of your True Self. True Self always sees through a unique set of eyes which is your Unique Self.
Unique Self (unlike soul) lives at the level of manifest and unmanifest, the level of Spirit itself.
It’s important to say that in some traditions the soul doesn’t refer to the spiritual quality of separate self, but refers to something much closer to Unique Self. But because it can be confused, we have gone through pains to differentiate the two. Unique Self is the unique expression of your essence.