Feeling not so good about myself

Something that made me feel even more frustrated with myself. Was contemplating if I shld attend the advance step class yesterday. Got persuaded by EL to attend cos he said that it was chicken feet. Have you ever attended a class that you couldn't catch up with? It's pure agony and frustration. I couldn't catch up of course and gave up 30 mins into the class. That left me not feeling too good about myself too..... :(