Enlightenment (spiritual) yoga" and "karma yoga" are subsidiary. In bhakti yoga, practice centers on the worship God in any way and in any form, like Krishna or Ayyappa. Adi Shankara himself was a proponent of devotional worship or "Bhakti". But Adi Shankara taught that while Vedic sacrifices, "puja" and devotional worship can lead one in the direction of "jnana" (true knowledge), they cannot lead one directly to "moksha". At best, they can serve as means to obtain moksha via shukla gati. Karma yoga is the way of doing our duties, in disregard of personal gains or losses. According to Sri Swami Sivananda,
Bhakti Ballabh Tirtha Bhakti Ballabh Tirtha Srila Bhakti Ballabh Tirtha Maharaj (24 April 1924 - 21 April 2017) was a disciple of Bhakti Dayita Madhava Goswami Maharaj and an acharya and initiating spiritual master (Sri Guru) in the Gaudiya Math following the philosophy of the Bhakti marg, specifically of Caitanya Mahaprabhu and Gaudiya Vaishnava theology. He was the President Acharya of Sree Chaitanya Gaudiya Math, headquartered at Kolkata, West Bengal, India and having more than 22 branches in India. He was president of WVA (World Vaishnava Association) and founder of GOKUL( Global organization for KrishnaChaitnaya's Universal Love). He has written extensively in Bengali,