“You do not have to use your will to conquer adverse conditions, or to subdue unfriendly forces; there are no unfriendly forces; there is only One Force, and that force is friendly to you; it is a force which makes for health.
Everything in the universe wants you to be well; you have absolutely nothing to overcome but your own habit of thinking in a certain way about disease, and you can do this only by forming a habit of thinking in another Certain Way about health.
Man can cause all the internal functions of his body to be performed in a perfectly healthy manner by continuously thinking in a Certain Way, and by performing the external functions in a certain way.
He can think in this Certain Way by controlling his attention, and he can control his attention by the use of his will.
He can decide what things he will think about.”
Wallace D. Wattles