FIND ANOTHER INSTRUCTOR!!!
Honestly, I have been exactly where you are. I completely lost all of my driving confidence, and became really nervy because of an impatient instructor. My last lesson they basically told me to find a new instructor and that I couldn't drive. I cried so much after, as I'd spent so much money and was trying so hard.
I didn't drive for five months, and then literally today I had my first lesson with a new teacher. She was patient, kind and calm during my lesson and it has made such a difference. I really enjoyed it (rather than dreading it like I used to) and I feel like I'm actually going to progress now!
So, I'd definitely recommend you find someone else. You don't want to waste your time and money on someone who you dread seeing X