Having "a strong fear of people" sounds to me like too much anxiety for you to be carrying around to say that everything is fine with you. When there is a personality characteristic that is causing you stress, then I think that is what gets called a "maladaptive personality trait." Having a mindset that causes you to "always worry" to the extent that you describe sounds to me as being maladaptive. It's really all about how comfortable you are in your own skin. Sometimes psychiatrists will say that a person has a "maladaptive trait'" but not necessarily a full-blown disorder. Also, there is a diagnosis called "Mixed Personality Disorder" which would apply to someone who has maladaptive traits from different personality disorders. Furthermore, there is a diagnosis called "Personality Disorder Not Otherwise Specified." I guess that is used for someone who seems to be having an awful lot of struggle caused by a dysfunctional personality but who doesn't match up that well to the usual categories of personality disorder.

I think personality disorders are a lot more common than what we would think based on how many people get diagnosed. I think you are wise to question that something may not be right in that you are having a lot of anxiety. The ultimate question is can anything be done so that you might not be under this stressful fear. I think there could be, but first it takes recognizing that a problem exists. It sounds to me like you are not as happy in life as you might be, and deserve to be.