How Manifesting Works
The subconscious mind plays a big part in the manifesting process. The land of the subconscious mind is where all your requests are held. Think of the subconscious mind like a garden and your requests are planted in this garden. When your requests are fully flowered, they appear in your reality.
The subconscious mind holds all of your requests. Many of which you probably never intended to plant, but are planted due to your beliefs, thoughts and feelings which influence the subconscious mind. This means your unwanted requests can get planted, as well as your wanted requests. This is why it is important to be mindful of your thoughts, beliefs and feelings. Always remain in the state of self love so that you plant only wanted requests as opposed to unwanted requests. Unwanted requests are planted due to too much focus and attachment to your external reality and root from feelings of fear.
Everything in our reality is a manifestation from the subconscious mind. Most of the time we are not aware that we planted these requests.
One of the most helpful techniques to use to plant into your subconscious, if you want to be really specific about what you want, is imagining a scene where you already have the desire. Imagine it from first person point of view as though you are living it. Ensure you feel the feelings and have the exact thoughts as you would if you were living it. This technique allows you to be very specific so an exact copy of this scene can be planted in your subconscious mind and it will manifest exactly as you have imagined it. Repeating the imaginal scene in your mind will solidify it being planted in the subconscious. This technique is very useful if you want to be specific about your request.
What technique you use can also depend on what you are asking for. For desires that you are really keen on having, I would recommend making a request after meditating or praying (connecting to God) and then either script or declare out loud. This is because these are simple techniques and you don't have to worry about whether you have imagined properly. You can be sure that it has been planted because your subconscious mind opens very wide during meditation/prayer (a practice where you are connecting to God - the Divine).
This is the science behind the first step. Now let's get into the science behind the next two steps.
So, the next 2 steps are about letting go and believing in the Divine to bring the desire. When you are truly practicing this, your conscious mind actually forgets about the desire or at least thinks about it much less than if you did not let it go. When you are grasping onto the desire, your conscious mind obsessively thinks about it and it feels uncomfortable.
Forgetting about the desire allows the request in your subconscious mind to flourish. The subconscious mind operates on the desire when the conscious mind is not. By letting go of it from the conscious mind, you are giving full control of it to the subconscious mind. The subconscious mind is linked to the Divine in ways which are unexplainable to the human intelligence.
During the time your desire is not on your conscious mind, a series of events starts to occur which leads you to your desire, or brings the desire to you. You don't need to do anything. Just continue to trust in the Divine.