Re: Panic attacks happening at a moment's trigger..
At my worst with HA and GAD, I was being triggered by the slightest thing. A change in tempo in music would trigger a panic attacks and the sight of Mary Berry's weird fingers once brought on a massive attack!
Your body is over-stimulated cocker. The stress hormones are running feral in your body. You have to reduce the amount of stress hormones by deep breathing (which shuts off the stress response) and axing all stimulants - body and mind.
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A thought is harmless unless we believe it.