Anyone who knows me knows my mantra is "Breathe."  But it's more than a mantra, it's also darned good advice.  When you are feeling anxious or scared, you breathe shallowly and through your mouth.  Breathing through your mouth sets off alarms in your body which, eventually, sends adrenaline into your veins and makes you feel more anxious or scared.  Instead, breathe slowly through your nose:  inhale for a count of 6 and exhale slowly through pursed lips for a count of 12.  Breathe steadily and let the oxygen levels in your brain rise.  When your brain is working, you are less likely to be anxious.

Taking time to breathe also gives you a moment more to decide how you're going to resolve whatever problem is creating your anxiety.  It also might give you the time not to say something you might be thinking.

So Breathe - often and deeply.