Ballet~is~the~universal~language

Sometimes I feel like my ballet teacher hates me.

Sometimes, I’ll act a bit silly in class, or not be focusing. Im 13, after all and sometimes I just want to be a kid. But then I get out of control and disrespectful. Plus I have terrible technique, and I can just see when my teacher watches the younger girls at my studio who are better than me, that proud look in his eyes. Then after I finish my variation, disappointment.
Does anybody else feel like this?