Jnana/Knowledge of the Self evokes bhakti/devotion towards the Self. It is this bhakti that acts as anchor for the mind. Yoga means union or integration. Normally mind is divided in many parallel activities consciously, subconsciously and unconsciously jointly. Most of the times inner-chatter/verbalisation goes on in the mind in the background while we perform some act. It is bhakti that integrates the divided mind and union/yoga happens.