A soul is not something that you have. It is what you are. I usually use the term "entity" in preference to the term "soul" simply because those particular misconceptions are not so connected with the word "entity" and its connotations are less religious in an organizational sense.
The trouble is that you frequently consider the soul or entity as a finished, static "thing" that belongs to you but is not you. The soul or entity - in other words, your most intimate powerful inner identity is and must be forever changing. It is not, therefore, something like a cherished heirloom. It is alive, responsive, curious. It forms the flesh and the world that you know, and it is in the state of becoming.