I discovered something that really helps me with the anxiety I get during palpitations. Sometimes it's even gotten rid of the palpitations. (The only other thing that can do that, is a workout!) Marchlove told me to make a post about it...
It's called tapping (or the emotional freedom technique). It involves tapping yourself in specific locations around your body (meridians), whilst repeating various statements. Which I know sounds like woowoo... I only tried it because I was desperate. I've already tried 'breathwork' and focussing on my breath. And meditation apps. None of that seemed to work.
But this has worked. And apparently there's some research behind it - they've even done controlled trials where they've got people to tap in other places(!) which don't work.
If you want to check it out, you can download an app from the app store called the Tapping Solution - and sign up for the free 11 day trial (and then go to your subscriptions and cancel it so you're not charged after the 11 days).
You can also go to YouTube and search for 'emotional freedom technique' and 'tapping solution' for more info.