[header] How to keep calm when you are annoyed with someone [title] Realize that you're losing your temper with this person. [step] This is important, otherwise you might simply let out your annoyance or feel justified in being irritated. [title] Breathe deeply and slowly. 
[step] Keep your cool by breathing deeply and slowly, to calm down your nervous system and to buy yourself some thinking space. [substeps] Try inhaling for 4 seconds, holding for 2, exhaling for 8, waiting for 2 and repeat.