In his illuminating text, The Yoga Sutras, the sage Patanjali introduces a systematic path to regain Higher Consciousness. This has since been called Raja Yoga or the Royal Path, a journey of techniques and lifestyle guidelines to awaken the mind to its true Self. Within the text, Patanjali provides a concentrated set of instructions known as the Eight Limbs of Yoga, culminating in a state of freedom, liberation, ecstasy, and enlightenment—Samadhi, the realization of all your spiritual practices.
Patanjali explains that Samadhi is a state of meditative absorption, attained by the practice of Dharana (focused attention) and Dhyana (effortless meditation) when the True Essential Nature is known, without the distortion of the mind. It can be thought of as the culmination of your meditation process. Samadhi is the mind in its most concentrated state and can be compared to normal thought as a laser beam can be compared to normal light. The awareness of the meditator, process of meditation, and the object of your meditation have all merged into one. From knowledge, you have become knowingness. The mind in Samadhi possesses power that a normal mind does not, making it the main tool the Yogi uses to achieve the end goal of yoga—the joining of the individual self with the Universal Absolute. FROM THE CHOPRA CENTER