Greetings in the name Most High RastafarI,
'The mind is the forerunner of all actions. All deeds, good or bad, are led by mind, created by mind. If one speaks or acts with a corrupt mind, suffering follows, as a wheel follows the hoof of an ox pulling a cart. If one speaks or acts with a serene mind, happiness follows as surely as one's shadow follows one on a bright day.
'The wise man, by vigor, mindfullness, restraint and self control, creates for himself an island which no flood can submerge, no sorrow can cover. The person who reaches the sacred, the inexpressible, who has permeated his mind with it, who is in control of his senses will know neither sorrow nor fear'.
As you can see,whether one wants to move a mountain or change one's heart, it begins in the mind. There can be no doubt.