I get paranoid frequently - this is quite typical of Autism at times.
Remember - humans think so so many thoughts during the day, and Autistic people think thoughts possibly even more, and with more focus on the thought, then this can create a downward spiral of fear, negativity and such and such.
Try meditation perhaps, or other good techniques for mental well being.
It's good to catch yourself analyzing and stop doing so - meditation boosts moods very much so, and is good to do daily if you can, and you can always rely on the backing of all of us here and perhaps some self helf books, inspiritational quotes etc. Paranoia is a highly unpleasant emotion and in a non pressurized way, try to avoid it with pleasant activities.
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Thousands of candles can be lit from a single candle,
and the life of the candle will not be shortened.
Happiness never decreases by being shared.