Having the simple knowledge and understanding of how powerful the spoken word truly can be, we can utilize it as manifestation tool. Simply stating our desires out loud can be more powerful than we realize. Affirmations are a great example of this to start the manifestation process because we are announcing to the Universe the outcome we want to create as if it has already happened.
Emmet Fox wrote about metaphysics and the power of prayer in essays and books. His teachings are founded in Christianity and bible stories. He cites Jesus Christ as being the greatest teacher of metaphysics who ever lived and explains that thoughts are our most important emanation, more important than what we say or what we do. In the books Power Through Constructive Thinking and Find and Use your Inner Power Fox speaks about "building the mental equivalent of what you want and to expunge those that you don't".
Have a vision. You need to know exactly where you wish to go. There is no way around this first step. It’s like going for a trip somewhere not knowing exactly where. You might end up in your neighborhood wondering why you aren’t some better place. Well, you just wanted to get somewhere else, without a clear vision and that is what you’ve got — you’re somewhere else. Once you know that you’re heading to Hawaii, you know which plane to take. It works exactly the same with anything in your life. Once you have a direction, your mind will align your actions towards your goal.