Meditation can be classified either on the basis of the function meditation performs in spiritual advancement, or the part of personality that is predominantly brought into play during the process of meditation.
It anchors the attention on the breath, in an image or a mantra. The simplest form of concentrative meditation is to sit quietly and focus the attention on the breath. Focusing the mind on the continuous rhythm of inhalation and exhalation provides a natural object of meditation. As a result our breathing will become slower and deeper and the mind becomes more aware and peaceful.
Mindfulness Meditation :
The person sits quietly and simply witnesses whatever goes through the mind without becoming involved in thinking aout them. This helps to gain a more calm, clear and non reactive state of mind.