I can’t remember where I got it from but I remember hearing it on either a TV show or from someone in passing. 

Whenever I start to feel an anxiety attack coming I start counting and saying the alphabet at the same time

(For example 1 A 2 B 3 C ect.) It’s meant to get your brain concentrating on on what the next letter is and the number following and takes your mind off the cause of anxiety 

It doesn’t help 100% of the time but for those minor issues that you just need a distraction from it has been a good distraction method for me