I have severe anxiety and i know how anxiety can just sneak up on you out of the blue like that! Sorry OP! next time take deep breaths, its so simple yet helps so much!

Some CBT for anxiety may be in order. But no reason to worry about other motorists, unless youre doing something wrong. If some guy is being an impatient ass behind you, just let them pass. And ya know, **** em, dont let it ruin your day.

Try listening to classical music in the car. It's very relaxing and can keep your mind off the anxiety. Sorry you have to deal with that OP. Anxiety is a horrible thing to live with. :(

Rather than panic you could just drive normally and give mean people the bird..

You need to take a break from driving.

I have anxiety and it causes me to do this too! granted im still a learner but im past the stage where I should be stalling at the lights, yet one look in the rear view mirror and a car or two behind me and all i can do is think "what if I stall," which ofc makes me panic and then stall :| taking deep breaths as someone above said definitely helps tho! and just think "im a competent driver, there's no reason i can't move off properly" because it seems to be a lack of confidence over a lack of skills

It is imperative to worry what is going on on the road w/ other drivers & pedestrians rather than worrying and being paranoid about impatient drivers to rush you otherwise something worse can happen, so don't worry about someone behind you waiting for you to move cause that would make me anxious even though I don't have a panic attack, then again I could care less if they're tailgating me waiting for me to leave quickly.

Dude all you need is too just breathe

I thought FLORIDA drivers were dumb.

It's not your problem if someone honks at you 1.6 * 10^-23 seconds after the robot changes