Emotional support pet. That is sound advice. The litter box is always an issue but if you empty it daily, should be less of an issue. Although when my cat would go for number two, I had to crack a window open as the smell was quite overpowering. But overall, cats are pretty clean animals.

My OCD isn't that bad aside from the compulsive hand-washing, obsessive thoughts and triple checking if the door is locked. It does fuel my anxiety a bit. Psychology is still an emerging scientific field and there's not much empirical data to support some of the theories. Although cognitive therapy can provide one with coping mechanisms I think cats are better IMHO.