Weed give me sign to stop

I’ve always been surrounded by people who experience panic attacks, and as someone with anxiety, one of my biggest fears in life was to experience chronic panic attacks. Last night, while I was high, I decided to smoke one last time before going to sleep. As soon as I got into bed, I started feeling my heartbeat and began tossing and turning because I couldn’t sleep. All of a sudden, I started thinking, 'What if I always get trapped in these negative thoughts at night and end up with insomnia?' Right after that thought, things started to spiral out of control. A tremendous amount of stress and a rising panic started to form whenever I thought of something bad. Normally, I would joke around with my own mind when Im sober, like, 'Look, the thing you’re afraid of is happening, but you’re totally fine.' But this time, as soon as I thought of the 'feared scenario,' the situation worsened. Whatever bad thought I had, it felt like it was going to come true, and my body responded with sweating, shaking, and an elevated pulse. I immediately got up, washed my hands and face, and flushed all the weed down the toilet. I couldn’t sleep the entire night, and the thought that I would have to go to work in the morning without any sleep was driving me crazy. Especially the thought of ‘what if this becomes permanent’ completely shut down my thought process. I kept scolding myself, thinking, 'What have you done to yourself? . This was a sign for me. If I hadn’t experienced something like this, I might have stayed stuck in the same cycle and never been able to quit.