There are 4 pillars of worship (उपासना):

गुरु (Guru)
इष्ट (The One & Only and The Most preferable God)
मंत्र (mantra) &
भक्ति (devotion) with like-minded devotees, i.e., bhaktas who have the same इष्ट

ग्यान (Knowledge) & कर्मा (Action) are stepping-stones to भक्ति which is the ultimate way to please Lord.

ग्यान(Knowledge) & कर्मा (Action) without keeping Lord in focus are useless - these will only keep you in troubled waters of the world repeatedly, birth after birth

ग्यान (Knowledge) & कर्मा (Action) keeping Lord in focus are called ग्यान योग & कर्मा योग as they then help you in establishing lost relationship (योग =union) with Lord.

using ग्यान योग & कर्मा योग as pillars OR even without these two, PURE LOVING DEVOTION towards Him, i.e., listening to His kathas, bhajans with ears, having His darshan with eyes, hands in His worship, feet take प्रदक्षिणा of His temple, eating food only as prasad after it is offered to Him, mouth singing His glories always, mind (मन) tuned to Him always -

PUT YOU ON ROYAL HIGHWAY TO MEET LORD OR RATHER LORD COMING TO YOU AS WE LOWLY BEINGS ARE NOT CAPABLE OF SEARCHING THE UNLIMITED BUT HE FINDS US.

"तुम ढूंढो मुझे गोपाल, मैं खोई गैय्या तेरी"

Please FIND me/take cognizance of me, O Lord, I am Your lost cow that has wandered too far away from You & therefore lost my way & since I am not in a position /nor capable of finding You, You please FIND me