I was overtaking (in the middle lane) on the m/way when, as a culmination of several things that I was peripherally aware of, a car in the RH lane swerved towards me. There was nowhere for me to go, sandwiched as I was between the car that I was overtaking (and I was only just ahead of it) and the cars immediately to my right and behind me.
(BTW, it was alright in the end, no crash.)
I flinched massively, and must have twitched the wheel to my left, because all of a sudden the car was swerving and dipping wildly from side to side. It's a long car, and boy did the suspension get a workout as I tried to get it back under control. Losing control at 70mph is no joke. Bloody terrifying.
Immediately afterwards, as I drove along, I could feel the panic mounting. I was starting to hyperventilate again. I considered pulling over onto the hard shoulder until I got myself together again, but decided not to, as I knew that there was a good chance I would be too frightened to come back out onto the motorwary. So I got a grip of myself and continued my journey.
The return journey was really worrying. I had no choice - I had to go home - and that was the only thing that forced me onto the motorway. I drove slowly and conservatively, sticking to the LH lane and pootling along. It took me nearly twice as long as usual to complete the m/way section of the journey. But I did it.
You have to get back in the saddle. You have to master your fear, and not let fear be your master. (Sorry for the cliche ).