Out of the Hindu tradition comes yogic meditation, which is concentrative practice. The traditional basic exercises consist of focusing the mind on a single object – a stone, a candle flame, a syllable, etc. — and not allowing the mind to wander.
Having acquired the basic skill, the yogi proceeds to expand his practice by taking on more complex objects of meditation – chants, colorful religious images, energy channels of the body, and so forth.
No matter how complex the object of meditation, the meditation itself remains an exercise in concentration.
Mindfulness in Plain English