There needs to be two of you: you and “you prime.” The latter is an heuristic entity brought into being by you for the purpose of protecting and orienting you.
Your “you prime” makes the hard decisions – saying no to friends, curtailing vampiric commitments, enforcing skeptical habits of mind, and keeping you safe – when you are, for any reason, disinclined to do so.
This little bit of as-if – this guardian phantasm, this editor – is a nifty trick, I have found, and good mental hygiene.