Over the past 6 months I have developed a severe driving anxiety to the point I don't want to drive anywhere. When I have to drive, such as to work, I arrive at such a state of high anxiety its effecting my performance at work in a job I cannot afford to make mistakes in.

My whole driving anxiety revolves around being caught by speed cameras or traffic camera lights. I NEVER speed. I havent had a ticket in 10 years but the crippling fear of going somewhere new and not seeing/realising a road is say 20mph when I think it is 30mph. 

I am very very cautious but still the fear of making a mistake/reading speed limit signs wrong is literally ruining my life at the moment.

Can anyone recommend how to overcome this or if they have experienced anything similar?