What helps you the most during a panic attack?
This is cheesy but I play with my animals, being around them helps me calm myself down and try and focus on something else.
@Jamie0906
deep breathing and trying to rationalize my thoughts and feelings 
When I am having a panic attack, I've noticed that taking deep breaths helps me. I seem to calm down if I count my breaths and try to breathe calmly.
@JamieSclafaniLMSW I suffered from panic attacks for about a year. It was unbearable. I thought that I was dying. But I came across one book that could help me when I had already lost all hope. Book title "Panic attacks are a myth of incompetent doctors: Get rid of them quickly, for free and for life". Here is a link on the Amazon https://www.amazon.com/dp/B07FZH9PDS
The presence of something or someone
Some things that help are: squeezing my husband's hand, texting my husband, labelling exactly what I'm feeling and telling myself that I've felt these wild symptoms before and have survived. Sometimes I recite a mantra in my head that calms me down (I use 'I am calm, strong and capable of handling any challenge'). I heard this somewhere and it stuck with me. These things all help a little bit, but nothing helps completely except riding it out.