This is common with many people. Paranoia does not exist in this world, because "they" are all out to "get" you. To survive in this world one must realize that you are alone and that virtually everyone else is your current, or potential enemy. Sorry if this seems so much of a downer, but after 69 years in this world this is a lesson I have learned the hard way.
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"A man needs a little madness...or else...he never dares cut the rope and be free."
Nikos Kazantzakis, ZORBA THE GREEK
Some of us just have a little more madness than others!