OHC 112.4
(Our High Calling 112.4)
No one but yourself can control your thoughts. In the struggle to reach the highest standard, success or failure will depend much upon the character, and the manner in which the thoughts are disciplined. If the thoughts are well girded, as God directs they shall be each day, they will be upon those subjects that will help us to greater devotion. If the thoughts are right, then as a result the words will be right; the actions will be of that character to bring gladness and comfort and rest to souls.... (OHC 112.4) MC VC