Being wrong is a learning experience. You're going to be wrong quite often in your life and this is a good way of learning that a) it isn't fatal and b) when you pay attention you can take something positive from it. Being corrected is absolutely fine. It's a useful way of learning new things.
I'm a Research Assistant (amongst other things) and I'm still wrong about stuff reasonably often. It's OK. Still alive, still earning, still having a good time.