I was listening to music on the radio, like I usually do, to keep me calm while driving. I didn't realize that a firetruck was right behind me with its lights flashing and siren on. It honked and I pulled over to the right in a panic. After it passed, I quickly moved back into my lane. I wasn't looking ahead to see that another car in front of me was doing the same thing... luckily I swerved around them. If I had been just 1 second later in reacting, I would have rear-ended them.
I'm still feeling rattled about it. Experiences like this make me think I'm not fit to be on the road. I feel like such a fucking idiot. I'm so angry at myself right now.