2 people arguing inside your head is ok... when 5 more show up, THAT'S when you should be worried.:
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Kidding. I think it's pretty normal. I used to do that a lot back in the day and I think this tendency is made worse when you isolate yourself socially.
One popular theory asserts that the brain is made up of "parts" that are all trying to carry out their individual agendas. In hypnosis, these parts are frequency brought to the surface so they can communicate with each other.
For example, you may have a part of yourself that wants you to go out and meet new people while there is another conflicting part that wants you to stay home because it's fearful of rejection. This style of hypnosis is called "parts therapy." Google it for more info.