James Allen 
The Life Triumphant: Mastering The Heart And Mind [EPUB ebook] 

Every Being Lives in his own mental world. His joys and sorrows are the creations of his own mind, and are dependent upon the mind for their existence. In the midst of the world, darkened with many sins and sorrows, in which the majority live, there abides another world, lighted up with shining virtues and unpolluted joy, in which the perfect ones live. This world can be found and entered, and the way to it is by self-control and moral excellence. It is the world of the perfect life, and it rightly belongs to man, who is not complete until crowned with perfection.