Lord Śrī Kṛṣṇa said: O mighty-armed son of Kuntī, it is undoubtedly very difficult to curb the restless mind, but it is possible by suitable practice and by detachment.
the Personality of Godhead said
undoubtedly
O mighty-armed one
the mind
difficult to curb
flickering
by practice
but
O son of Kunti
by detachment
also
can be so controlled.