I've been driving for forty years and used to navigate the M25 regularly going from Essex down to Hastings to visit my parents. Then around 15 years ago I started to get anxiety in certain situations such as speeds over around 50 (which rules out motorways) wide open roads with no other vehicles around, busy roundabouts and waiting at traffic lights, of all things.
As soon as the car stops moving, such as at traffic lights or waiting to get onto a busy roundabout, I have an irrational fear of getting stuck, either by the car breaking down or me somehow forgetting how to drive.
On open roads and motorways it's similar, I feel like I'm going to lose control of the car somehow.
Yet when driving around my local area I am a confident driver. My anxiety is either 0/10 or 9/10, no middle ground.
Forcing myself to do the things that make me anxious doesn't work, if anything it increases the fear.
I don't understand where it's come from or what I can do about it.