OHC 112.3
(Our High Calling 112.3)
The thoughts must be trained. Gird up the loins of the mind that it shall work in the right direction, and after the order of well-formed plans; then every step is one in advance, and no effort or time is lost in following vague ideas and random plans. We must consider the aim and object of life, and ever keep worthy purposes in view. Every day the thoughts should be trained and kept to the point as the compass to the pole. Every one should have his aims and purposes, and then make every thought and action of that character to accomplish that which he purposes. The thoughts must be controlled. There must be a fixedness of purpose to carry out that which you shall undertake.... (OHC 112.3) MC VC