The first step in soul retrieval is to realize that you have lost your soul and decide to retrieve it.
The second step is to leave a reserved space in your consciousness so that when you have recovered it, the soul can find its place.
The third step involves putting a ban on parking in that space and strictly preventing anyone who wants to occupy that place from entering.
As a matter of fact, soul retrieval is not about recovering your soul. It is about making sure that there is some place for your soul in your life. The soul left simply because there was nowhere to park.