In the brilliant lecture which comprises this book the author stresses on the need to make our spiritual life all-comprehensive. Spirituality should not be narrowed down to morning and evening prayer sessions alone. True spirituality encompasses the whole gamut of human life, our every movement, our every breath. The author shows us the different ways to attain such a totally spiritualized life.
Those who have succeeded in attaching or detaching their minds at will have succeeded in Pratyahara, which means gathering towards, checking the outgoing powers of the mind, freeing it from the thralldom of the senses. When we can do this, we shall really possess character; then alone we shall have taken a long step towards freedom. Before that, we are mere machines.
-Swami Vivekananda