To check that out. It is really good to be aware of how you are feeling and recognize that you want to change that.
I dont know your situation well...If you could find a good therapist or a good doctor that is someone who could help and recommend things. It depedns on the level fo paranoia, I guess, too.
Cognative behvioral therapy (cbt could work)
i know of a few books that seem to help different people with anxiety - yo udidnt use this word so I dont know if it fits, but the following books seem to help:
anxiety and phobia woorkbook by bourne
mind over mood (by padesky) which I think pioneered something called cognative-behvioral therapy - which is supposed to help you change thinking patterns.
sometimes changing diet, sleeping patterns, habits, etc. Help - like if you smoke a lot of pot, that can lead to a lot of anxiety or paranoia (some people find hash to be better than pot). Some people find taking medications helpful, too, although I would recommend with this to do a lot of research on what you migh tbe prescribed and what it is supposed to do. Meds can be good but can be pretty crappy too.
Too much info?
Hope it helps