1 Get control of your breathing; shallow, fast breathing can cause hyperventilation. Take deliberate slow, deep breaths in through your nose for 5 to 7 seconds, hold for 3 to 4 seconds, then breathe out through your mouth for 5 to 9 seconds. Repeat for 20 counts.
2 Call a friend to talk you down; distraction helps.
3 Concentrate on your immediate surroundings; find five things to focus on intently. For example, notice the intricacies of a lamp, a tree, the pattern of tiles on your floor or even the label on a cereal box.