Swami Sivananda 
Mind – Its Mysteries and Control 

To everyone striving for success in life, the invariable stumbling block proves to be the turbulent vagaries of the mind. An undisciplined mind makes a man slave and wrecks his life. Controlling and subduing it is the most vexing of problems to the earnest seeker of happiness.

For gaining mastery over the mind, you have to know what it is, how it works, how it deceives you at every turn and by what methods it can be subdued. In this book, the subject has been dealt with; and the nature of the mind, the various forms that it assumes, the secret of its inner workings and the way to control it are fully and clearly explained.