This morning I recognised the tell-tale signs that I am carrying an astral passenger, or "entity". Usually the signs build up over a few days - increasing woodenness and repetition in my thoughts, emotions going in loops rather than flowing like a river, increased agitation and pain in my upper back, usually with head-aches. The final clue is that I start to think repeatedly and obsessively about someone with whom I crossed paths 1-2 weeks earlier. I guess 1-2 weeks is the "incubation" period for an entity to settle into my aura and create real problems, after picking up the entity from the other person.
Having identified that I am carrying a passenger, the steps for clearing it are straight forward. Summon a lot of light. Say hello to the entity, "I can feel you. I know you are with me. I can feel your pain." I keep reflecting the entity's feelings and sensations, while bringing the light into each of my chakras. Eventually the entity tunes into the light and prefers it, then starts to shift, complete with remorse and other strong emotions. I have heard it said that many people need to find an experienced exorcist to clear an entity. My own channel seems adequate.
In fact, as well as clearing entities, my own channel seems to like picking them up in the first place. Often when I am in public, I feel a moment of enhanced, involuntary curiosity towards a person, at which time my sensations have a kind of double density. Later it seems that I picked up an entity at that point.
One day when I was puzzling about the number of entities I pick up, I became aware of a spirit at my base chakra, acting as a kind of gate-keeper, collecting and clearing entities through my body. This seemed pretty bizarre to me, but he gave me the name "Thaddeus". When I looked up Thaddeus on Google, I found he was the patron saint of 'lost causes' and 'cases despaired of'. He is a kind of last resort to help people when all other avenues are closed. Sounds like an appropriate name for someone who rescues earth-bound entities! I don't know whether to take this all seriously, but I do love the poetry of this kind of experience.