Kyle,
I experience mental effects with low level physical effects. I hate the feelings. But when I keep in mind that I have done this before and I can do it again I get through the anxiety. When I feel the anxiety coming on I am learning to not fear the anxiety. I am learning that there is a very subtle cycle of anxiety triggering "fear" of the anxiety symptoms and that fear makes it worse. So I just sort of "give in" to the symptoms and they are not as bad and not as long as usual. I just keep reminding myself that I am a work in progress.