This book is based on the notes of weekly lectures given by Swami Yatiswarananda at Ramakrishna Math, Bangalore. The Swami, a Vice-President of the Ramakrishna Order, was an illustrious disciple of Swami Brahmananda. He was a well-known spiritual figure in the Neo-Vedanta movement and did 17 years of pioneering work (1933-1950) in spreading Vedanta in Europe and USA.
To succeed you must have tremendous perseverance, tremendous will. I will drink the ocean, says the persevering soul, at my will mountains will crumble. Have that sort of energy, that sort of will, work hard, and you will reach the goal.