Yog has been classified and defined with different names such as: Karma Yog, Bhakti Yog, Gyan Yog, Hath Yog and Raj Yog etc., most of the people believe that a yog seeker should practice any one of the above. However, this is a wrong notion. Actually they all are integral parts of individual personality and these have to go together on the path of Yog sadhna. Maharishi Patanjali introduced Raja Yog* (link to Raj Yog) and blessed humanity with systemized volume on this great science as Yog sutra. (link to GURU patanjali) . It codified the first definitive, unified and comprehensive system of Yog.
Karm Yog is the path suggested by Lord Krishn establishing the importance of Karm and seeking bliss through devotion to Karm without indulging in the aspirations of expectations. It removes the myths that yog leads an individual away from worldly duties on the contrary it equips him with perfect wisdom and skill to go deep in karm and still staying aloof being detached with the fruits. This lesson of karm Yog was given in the battle field of famous Mahabharat where great warrior Arjun had withdrawn from his duty in the battle field under deep stress and depression.
It is an eight fold yog prescribed by Maharishi Patanjali, to introduce and educate the yog seeker with behavioral, social, intellectual, mental, physical, philosophical and spiritual aspects of yog. These eight folds are:
YAAM - Self restrains Five Yaam are mentioned in Yog Darshan. These five self restrains are :
Ahinsa Non violence (there are 6 kind of violence- Kaya, vacha. Manah, krit, karit, anumodit)
Asteya non stealing
Aparigrah non storing
NIYAAM - Self observances. Five Niyaam are mentioned in Yog Darshan. These five self observances are:
Hath yog is six fold path of yogic discipline with noted masters such as Gheranda Rishi, Guru Gorakshnath, matsyendra nath and Swatmaram etc. It is more or less closer to Raj Yog as it is assumed that in contemporary society of ancient times Yaam and Niyaam were deep rooted and necessity of their separate mention was perhaps not realized. There is a misconception and exaggeration regarding Hath Yog that it is all about performing tough postures with excessive outlook and is even mistaken as HOT YOGA putting the yog seekers to tough exercises in rooms under high temperature but opposite to this Hath Yog is based on science of swaras, the energy flow in left and right nostrils of an individual named as ida and pingala or surya and Chandra naadi i.e. the sun and the moon.
Though appears as different school of thought Bhakti Yog also has the same goal to achieve and that is meeting and merging into divine but the doors of bhakti Yog are open even for those who are not intellectuals as even Gyan Yog also lead us to merge into divinity through realization by intellectual methods of bhakt or a devotee like Meera, Raidas, Nanak and even illiterate Kabir could attain this consciousness through Bhakti Yog. On records there is no individual to be mentioned as founder of the path of Bhakti Yog but the examples of series of Bhaktas turned into realized souls declair Bhakti or devotion as a sacred path to realization of the ultimate goal of Yog.