Ok, now that I'm done with my grump fest from that video (it really touched a nerve apparently), I can definitely sympathize. Like others have said, it's part of the learning curve and it sucks. I'm currently experiencing my whiny phase of learning choreo. I love my teacher to death, but she likes to make things sometimes extraordinarily challenging. But, that's probably why I love her so much. We're a bit more than halfway done with a choreo and I can do it all without watching the video, except one stupid spot. So, I'm whining. I know that I'll get it so I feel like I can be harsh with myself. But it's definitely practice practice practice. Last session, I had one spot that kept getting me so I printed out that part of the notes and drilled it.
I hope it's getting better!
I hope it's getting better!