I don't know if it's right to call it limitations, but I realised something about my photography recently, as I participated in my first exhibition. (My part consisted of two pictures tucked away in a corner.)
When I looked around, I saw that most pieces in the room were quite abstract in form. In comparison my pictures were looking out-of-place. I have often had difficulties making abstract photographs; I believe this is because I have spent a lot of time trying to represent abstract ideas in a concrete way, so as to clearly convey a message. This has left me without any real mental path to abstract imagery.