In this verse from Śrī Bhagavad Gītā, Lord Krishna speaks about the regular effort a sādhaka, a seeker on the spiritual path, needs to make to remind the mind of its true nature—the Self.
By saying yato yato, Lord Krishna in this verse teaches that regardless of the cause for the mind’s restlessness and wandering, a sādhaka should gently bring it back to the joy of the Self, over and again.
Lord Krishna alludes to a significant practice on the spiritual path, the practice of smaraṇa, remembrance. When we find the mind getting caught in thoughts and feelings that lead us away from the Self, we have the choice of remembering to bring the mind back to its true nature, the light of the Self.
Remembrance and re-remembering is a niyama, a form of self-effort that we sustain with regularity. Over time, through practice, the mind becomes established in the steady knowledge of the Truth. The mind comes to know and experience at all times that it is So’ham, the supreme Self.