I have two. Needles...and enclosed spaces that I don't control when I can leave. Both have some basis in rational episodes in my past, but...are beyond rational in how severe they are. Particularly the needles, where even seeing a sharps container that I know contains them can send my heart racing. I can control such, but...it's...worrisome. The enclosed spaces bit...similarly, I have to either distract myself from the situation, or remind myself continually not to create the way to escape. Again, controllable, but...troublesome. Fortunately, it's only rather tight spaces that bug me. Things like a plane or a train or even a car aren't an issue. Though generally, it's best I be the one driving the car.