Sri Swami Sivananda has always laboured in a Divine Way, on a grand scale, for the spread of the Wisdom of spiritual India, for the dissemination of practical knowledge on mind & its total con-trol & conquest. So great his contribution to the world's spiritual literature, human happiness & enli-ghtenment, & so high is his spiritual Eminence that he has been justly esteemed as at once a Pata-njali, a Vyasa, a Yajnavalkya, a Sankara, an all-compassionte Saint & a dynamic integral Yogi. This book presents a number of most helpful hints on the Nature of Mind, & many methods for the successful conquest of mind. By aspirants, devotees, seekers after Truth, psychologists, & othe-rs who are seeking peace of mind & happiness in life, this work will be found highly useful