In India, the tradition of Yoga is as ancient as the Vedic period itself, and subsequently most of the system of philosophy accepted it as a sure path for the realization of the supreme  truth of human life. But the credit of given the systematic account of the basic principles of Yoga goes to Patanjali. After Patanjali it was practiced, tested, and developed by a large number of the Spiritual Leaders of Indian Culture and various commentaries were written on the Yoga sutra of Patanjali.

Aim and Objective, that is Patanjali Yoga Sutra will be discussed with emphasis on Ashtanga yoga (techniques of self-realization) now related to Bhagavat Gita and the concept of self-realization.

The history of Yoga very vast, to understand the yoga’s concept of self realization and it means as part of yoga philosophy, its various changes and modifications starting with Patanjali yoga then Hatha yoga, Raja yoga and finally contemporary yoga system.