Vernon Howard, in Esoteric Encyclopedia of Eternal Knowledge, talks about commanding your own mind.
It is possible for anyone to command his own mind. We do not permit strangers to enter our home and destroy valuable possessions, so why permit negative thoughts to roam destructively around our minds? You are no more required to submit to treacherous thoughts than you are required to submit to deceitful people – but you must learn to recognize treachery when it masquerades as sincerity. You can find all the weapons necessary for commanding your own mind, such as right intentions and a wish to end mental storms.
Conquer yourself, for then all haunting questions regarding the conquest of life will be answered. Then, never again will you need to anxiously pursue anything at all. Self-victory is total victory.