I thought I'd post here about a bad lesson too (for anyone reading this and thinking it sounds too easy).
Today's lesson was complete and utter <insert expletive here> and it felt as though the connection between my brain and limbs was full of glue! I made some incredibly stupid mistakes, like mixing up left and right signalling, taking the wrong exit on a roundabout, speeding, braking instead of accelerating, having zero idea of how wide the car was and nearly hitting stuff before the instructor took over... all things that I had mastered in earlier lessons and can normally do! My brain would say 'ok, you need to turn left here' and my arms would just do whatever the hell they wanted! I have no idea what happened and apologised to my instructor when we ended the lesson as I was so crap! Fortunately, he has the patience of a saint and never gets annoyed. But it was embarrassing! I was really angry at myself when I got home!
I'm blaming lack of sleep, as it was the first morning lesson we've done and I'm naturally nocturnal and can barely function before midday. But still, I had no idea just how slow my brain is that time of day! I know I'm far more clumsy a few hours after I wake up and can't manage conversations, so it's interesting to know how severely it affects my driving for future reference. I'm considering getting a note added to my licence when I finally pass the test stating "can only drive unaccompanied between the hours of 12:01pm and 3am"!
But I've calmed down now and will just get back behind the wheel in the new year and start again. My instructor is happy for me to book all my other lessons and the practical test in the afternoon and said as long as I'm aware of my limits then it's not a big deal. It's better to try these things while I'm learning with another person in the car than after I've passed and start driving on my own.