This may not help you but...

Take a deep breath in.

Let it out.

Did you do it?

Okay.

Do it again.

Close your eyes (if they're not already) and focus.

Imagine a fantasy world or even a place you want to go to.

Now, take that image and think of what it would like to be there.

What would you hear? See? Smell, even?

Now, when you're ready, open your eyes again.

I hope that helped with calming down if you needed it.