Any idea, plan, or purpose may be placed in the mind through repetition of thought.
Repeat anything often enough and it will start to become you.
Whatever we plant in our subconscious mind and nourish with repetition and emotion will one day become a reality.
Every suggested idea produces a corresponding physical reaction. Every idea constantly repeated ends by being engraved upon the brain, provoking the act which corresponds to that idea.
To begin with, you must realize that any idea accepted by the brain is automatically transformed into an action of some sort. It may take seconds or minutes or longer -- but ideas always produce a reaction of some sort.
You affect your subconscious mind by verbal repetition.