Each of these is the same except for our perception of who we are. What we believe rules our personal reality coloring our perception and perspective of ourselves and all things around us. We are more than we believe ourselves to be if we held the knowing to support it.
The Small-self is an analogy of a misperception people can have of the self sometimes. There is truly no Small-self outside of our own vision of who we believe we are. This is commonly a perception of those who haven’t met their own higher-self. For those believing themselves to be powerless at the mercy of greater forces both of light and dark are seeing themselves as a Small-self. Those caught in a life’s story of their own creation where others are doing things to them are living in the perception of a Small-self. The Self is a perception of the usual self where we believe we have as much control over our 3D world as anyone else has. There isn’t any need to be spiritually aware to live with the perception of the Self only that we’re not being a victim of life and more powerful forces around us.
The Greater-self is who we all are. If we held the knowing of our true self we’d be powerful beyond imagination. The Greater-self is here with us but it’s not automatically one with us. We’re called to learn it and earn it to become it. This is a process we engage in during our many incarnations here. Time after time we learn more adding to our Akash as we build the knowing needed to become self-empowered. Self-empowerment draws us into a relationship with our Guides, Higher-self and all the rest or our multidimensional aspects. Once we accept the rest of us on a level of knowing then the door is open to learn how we could join all of our aspects together becoming the Greater-self.
Knowing the Greater-self is a fundamental part of becoming a Master.