Think you need to calm down, but don't know how?
So far, I've found the below instruction somewhat useful;
you should give it a try.
Step by step instruction
1. Exhale (gently) for 4 seconds
2. Inhale for 3 seconds
3. Hold your breath for about 1 second
4. Back to Step 1
Source: Heard it from the radio station (FM98.8) a couple of days ago.
