I'm random when it comes to fears as well. Take heights for example: As a child I climbed trees that were several stories tall. My mom was afraid I'd take up mountain climbing. Hah, now there are times when I can hardly stand to be on a third floor escalator. One year I'll be going on serious roller coasters, and the next I'll be white knuckle on the ferris wheel. It applies to the dark as well. Sometimes I appreciate darkness but there are nights when I keep a low level lamp on to avoid panic.

It does feel awful random. Really, it's just anxiety finding an outlet. There was a lot of stress in my life and I had other mental health problems hitting me rather hard.

I found that getting the other stuff in my life under control really helped my anxiety as a whole. Facing my fears and forcing myself to do uncomfortable things was also useful. Push. Get a clear vision of what you want and go for it. For me the phobias could have been part of a process or, if I'd let it, a place that I fell into permanently. I gave up on heavily combating it for about half a year and became almost completely agoraphobic. So I definitely advocate doing everything you can to stay on top of the situation and not let it decline. We just have to work a bit harder and face some unpleasant feelings in order to accomplish that.