NO THOUGHT, whether it be negative or positive, CAN ENTER THE SUBCONSCIOUS MIND WITHOUT THE AID OF THE PRINCIPLE OF AUTO-SUGGESTION... Stated differently, all sense impressions which are perceived through the five senses, are stopped by the CONSCIOUS thinking mind, and may be either passed on to the subconscious mind, or rejected, at will. The conscious faculty serves, therefore, as an outer-guard to the approach of the subconscious.

Nature has so built man that he has ABSOLUTE CONTROL over the material which reaches his subconscious mind, through his five senses, although this is not meant to be construed as a statement that man always EXERCISES this control. In the great majority of instances, he does NOT exercise it, which explains why so many people go through life in poverty.

Remember, therefore, when reading aloud the statement of your desire (through which you are endeavoring to develop a "wealth consciousness"), that the mere reading of the words is of NO CONSEQUENCE— UNLESS you mix emotion, or feeling with your words. If you repeat a million times the famous Emil Coué formula, "Day by day, in every way, I am getting better and better," without mixing emotion and FAITH with your words, you will experience no desirable results. Your subconscious mind recognizes and acts upon ONLY thoughts which have been well-mixed with emotion or feeling.(and Faith) 

Napoleon Hill: Think & Grow Rich.  Fourth Chapter: Read online at http://www.twinisles.com/shs/tagr/tagr4_1.php