In regulated service someone may feel restless for enjoying sense gratification and by regulated service somehow they are keeping their mind pacified but the spontaneous devotional service is the opposite. One is feeling restless for serving Krishna and if that devotional service to Krishna is in any way distracted then that devotee will feel very impatient, find it quite intolerable.
H.H. Jayapataka Swami Maharaj
1984, 13th Sep, SB class @ Bhaktivedanta Manor, London, UK