I have a recurring nightmare that the semester is almost over and I haven't been to a single one of the math classes that I need to graduate because I keep forgetting about it and I know I'm too far behind to ever catch up. I've been out of college for _years_.
I think my math anxiety started in high school as a result of teachers moving through material too quickly in a learning style that didn't match up with how I learn. Once you get a little bit behind it can be really hard to find your way back in.