The following 10-minute Miracle Meditation is a simple but powerful way to calm the mind and body in a relatively short amount of time. “Three deep breaths followed by eight regular breaths, repeated as a pattern, over and over again for ten minutes. Focusing on the count – in-breath, out-breath, 3-8, 3-8, 3-8, etc., – clears the mind of troubling thoughts and the emotions they evoke and brings us squarely back into the present moment. Three deep breaths hyper-oxygenate the blood which metabolizes the chemistry of stress at the cellular level. The result is almost always an amazing, dare I say near miraculous, experience of centeredness, relaxation, calmness, serenity, and peace. It could be said that the exercise brings us an experience of our Transpersonal Self, a point of clear awareness above or outside the issues that trigger the reactions of the personal self. But it takes the whole 10 minutes to achieve such results.”
Source: Dr. Michael Brown

Additionally, I have found the following to be very helpful with this practice: As you are taking the three deep breaths, visualize a number 1 on your “inner screen” (at the top of the nose between the eyes, otherwise known as your third eye, the eye of Shiva, the sun center…) during the complete inhalation, and blank during the entire exhalation. On the second inhalation, visualize a number 2 during the inhalation, and blank during exhalation. Same with the third breath.

As you are taking the eight regular breaths, visualize a number 1 on your inner screen during the inhalation, and blank during the exhalation. Then a number 2 for the second breath and so forth.

Once you have breathed the three deep breaths followed by eight regular breaths, you have completed one round. Repeat the pattern for 10 minutes.

Enjoy.