Here’s a lovely easy-to-read blog article from Hey Sigmund about anxiety for teenagers to help them understand it. While it’s written for teens, I think it can be a handy read for older people too since many people don’t make a link between what’s happening in their bodies and how they’re feeling.
Helping people pay more attention to what’s happening in their body is part of the work I do with clients in therapy. Once you understand your physical process a little more, you can come to sooner identify when (in this example) you’re beginning to feel anxious. It’s then easier to try and find a way to support your anxiety at the earlier stages rather than at a later one when you’re in the middle of a panic attack!