Hello Humpty Dumpty: I'm sorry you are having this difficulty. I will admit that I am afraid of everything. I pretty-much always have been. I don't know why. As a result, I have certainly struggled with my share of paranoia as well. Unfortunately I don't have any easy solutions to this problem for you. What happened with me, when I did not seek the help I knew I needed for my mental health struggles, was that I ended up trying to commit suicide (twice.) Then I was involuntarily committed to 2 different hospital psych wards. This pretty-much eliminated the need for me to try to overcome any paranoia I might have had regarding seeking mental health services.
Of course, I don't know how things work where you live. But, where I live, a person can only be involuntarily committed if they present an imminent danger to themselves or others. I think this is pretty-much an accepted standard across the U.S. at this point, as far as I know. I could be wrong about this. Perhaps you could check this out. Assuming that this is the standard where you live, if you knew it to be the case, it might help to alleviate your fears of being committed. (This assumes, of course, that you are not a danger to yourself or others. If you are, then a hospital is probably where you should be.) Also, you might consider starting with a therapist rather than a psychiatrist. Many people see therapists for all kinds of reasons. This might be a less scary way to ease yourself toward the services you need.
Anyway, I hope that you can find a way to work around your paranoia & obtain the mental health services you need. Not doing so is only likely to make things worse. I wish you well...