In this verse, Bhagavan Krishna addresses the root cause of human suffering: the power of 'sankalpa' or desire-driven imagination. Sankalpa is the mental act of projecting future happiness onto external objects before they are even attained. By identifying the origin of desire in the mind's own creative projections, Krishna guides the seeker to strike at the root rather than pruning the branches. It is not enough to merely stop acting on desires; one must starve the mind of the imaginative seeds that give birth to them. This is a meditative discipline of radical interiority, where the mind ceases to be a factory of external craving and instead becomes a fortress of steady awareness. By restraining the indriyas (senses) from all sides, the practitioner transitions from being a victim of environmental stimuli to being a master of internal stillness. This is the prerequisite for the 'yukta'—the one joined in union—to experience the boundless joy of the Self, which is obscured only by this constant, restless mental reaching. The practice is not an act of suppression, but of transcendence, where the senses, no longer fed by the mind's delusions, naturally fall into a state of quietude.

True detachment is not the denial of the senses, but the conquest of the mind's imaginative power that projects happiness into a future that does not exist.