Clinic Day

I am getting so depressed. Today I did a full mouth xray and only got up to disclosing and he is only a 1B. I should have been able to get him finished or at least started.
And I had a class 2 return for her cleaning and I only got 2 quads done in all that time we had. Others who have had a class 2 return for a cleaning have completed with polishing and floride. I am really slow. I don't have technique when I probe and still takes me forever and I missed some depths....I put a 3 or 4 and they ended up being a 5. Holy cow how could I have missed that.
I need to figure out a way to get faster and more comfortable with what I am doing.
Any ideas would be very helpful.