This form of meditation combines the breathing techniques of mindfulness meditation with the mantras in transcendental meditation as well as mudras (think the thumb-to-index-finger pose associated with meditating).
You should always end your practice slowly, taking a minute to bring your awareness back to your surroundings. Bernstein says it's also important -- particularly if you're practicing for more than several minutes -- to do something that grounds you and brings you back in to your body. She recommends doing something as literal as stomping your feet on the ground, or simply have a snack or a cup of tea to re-center yourself and go about your day.