I f this book is to lay any claim to authenticity, it must make one point clear above all others. It is this: By persistent and sustained practice, anyone and everyone can make the yoga journey and reach the goal of illumination and freedom. Krishna, Buddha, and Jesus lie in the hearts of all. They are not film stars, mere idols of adulation. They are great inspirational figures whose example is there to be followed. They act as our role models today. Just as they reached Self-Realization, so may we. Many of you may worry that you are unable to meet the challenges that lie ahead. I want to assure you that you can. I am a man who started from nowhere; I was heavily disadvantaged in many ways. After much time and effort, I began to reach somewhere. I literally emerged from darkness to light, from mortal sickness to health, from crude ignorance to immersion in the ocean of knowledge by one means alone, namely by zealous persistence in the art and science of yoga practice (sadhana). What held good for me will hold good for you too.