Keep calm and buy crypto

But for real, just breathe through it and try to remember this too shall pass, sometimes people need to take medication because of chronic panic attacks.
Talk to my self
Remind yourself that the panic attack will end and will not make you faint. Understanding faint physiology will help. Someone will faint when his blood pressure is low. When panic attacks, we may feel faint, but actually not because our blood pressure does not go down.