This book, written pseudonymously by the legendary author of The Kybalion, William Walker Atkinson, is perhaps the greatest work of practical psychology on how to control, direct, and harness the incredible power of your thoughts, emotions, and will.It is obvious that the person who is best able to focus and concentrate will do the best job. This book is a study guide to concentration. Here you will find twenty lessons that will guide you step by step through what concentration is and how one can achieve it no matter what else is happening. There's a world out there waiting to be conquered and all you need do is concentrate!William Walker Atkinson (18621932) was an attorney, merchant, publisher, and author, as well as an occultist and an American pioneer of the New Thought movement. He is also known to have been the author of the pseudonymous works attributed to Theron Q. Dumont and Yogi Ramacharaka.