Some will disagree but I think there's something to be said for "being kind to yourself". In other words, if you find that you have to absolutely force yourself to go, don't. On the other hand, if you genuinely want to go but have that "anxiety resistance", being kind to yourself would mean that you should allow yourself to go and enjoy the yoga.
Assuming they're pretty cheap, go ahead and buy the classes. Don't dwell on it. Keep yourself only vaguely aware of when the classes start. Think about
something else, and make your decision at the last minute. I don't know...hopefully that's good advice.
My Brain: My friend, My enemy: A blog to chronicle my attempt to recover from anxiety/panic disorderanxietypanicdisorder.blogspot.com/